---
product_id: 15620820
title: "Bio-Active 100% Cyanuric Acid Reducer for Swimming Pools │ Non-Toxic CYA Reducer Powder │ 8 oz. │ 1-Pack"
brand: "bio-active products, inc."
price: "฿5044"
currency: THB
in_stock: true
reviews_count: 13
category: "Bio Active Products, Inc."
url: https://www.desertcart.co.th/products/15620820-bio-active-100-cyanuric-acid-reducer-for-swimming-pools-non
store_origin: TH
region: Thailand
---

# Non-toxic & eco-friendly Treats up to 25,000 gallons Reduces cyanuric acid by 50% Bio-Active 100% Cyanuric Acid Reducer for Swimming Pools │ Non-Toxic CYA Reducer Powder │ 8 oz. │ 1-Pack

**Brand:** bio-active products, inc.
**Price:** ฿5044
**Availability:** ✅ In Stock

## Summary

> 🌊 Dive into crystal-clear confidence—ditch the chlorine lock and own your pool’s purity!

## Quick Answers

- **What is this?** Bio-Active 100% Cyanuric Acid Reducer for Swimming Pools │ Non-Toxic CYA Reducer Powder │ 8 oz. │ 1-Pack by bio-active products, inc.
- **How much does it cost?** ฿5044 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/15620820-bio-active-100-cyanuric-acid-reducer-for-swimming-pools-non)

## Best For

- bio-active products, inc. enthusiasts

## Why This Product

- Trusted bio-active products, inc. brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Eco-Smart Pool Care:** Non-toxic, non-allergenic formula leaves zero residue—safe for you and the planet.
- • **Drought-Proof Solution:** Perfect for drought-stricken areas—no draining or refilling needed.
- • **Maximize Sanitizer Power:** Eliminate chlorine lock and boost sanitizer effectiveness instantly.
- • **Cut Your CYA Levels in Half:** Slash cyanuric acid by up to 50% without draining your pool.
- • **Easy Application, Long-Term Results:** One 8 oz bag treats up to 25,000 gallons, working quietly over 10 days.

## Overview

Bio-Active BA-CAR-08 is an 8-ounce powder designed to reduce cyanuric acid levels by up to 50% in commercial and residential pools. It eliminates chlorine lock, enhancing sanitizer efficiency without toxic residues or pollution. Ideal for large pools up to 25,000 gallons and drought-affected areas, it works naturally over 10 days without draining water, making pool maintenance eco-friendly and hassle-free.

## Description

Bio-Active Products Pool Stabilizer Reducer/Cyanuric Acid Reducer, 8 oz.

Review: It worked for me to a degree ... - Worked as expected - will need another bag though, have just a bit more to go before I reach the right number. When I purchased, my CYA was around 300 or more (lets put it this way, I was way passed the 100 mark on the tube) - I have a 10k and the bag says it will treat up to 25k ... well, I am now at 100. So, it works, but you may need more than one bag depending on size of pool and amount of CYA in pool. Also you should note that it can take up to 10 days to lower your levels - so I will have to wait another 6 days before adding a second bag to be sure. Leslie's charges $49.95, so this is a good price. Now, this wasn't the only thing wrong with my levels, so how it worked for me, may not be what you need (and I suppose I won't really know if it works until I add the second bag and see if it drops to where it needs to be) How I did it : I took out my chlorine duck and let the pool do it's thing (running 8 hours a day) for about 10 days with no chems. Then I washed my filters thoroughly and added the Phos Killer (from walmart $9 - kills 1000 ppm) and ran the pool for 48 hours non stop Then I turned the system off for 24 hours and let the pool sit After 24 hours I washed my filters again and then added my duck back into the pool and let the pool run a normal cycle for another day before FINALLY adding the whole bag of CYA into the skimmer and let the pool run normal cycles for 72 hours before adding the Alkaline Up - then ran it for 12 hours and when I took my water to be tested everything was back to normal except I'm now at a 100 on my CYA rather than 300, so if after 6 more days the levels aren't where they need to be, I think one more bag should do it This is the information I was given about using the Bio-Active product::: Bio-Active uses natural cultures to reduce your CYA, be sure your pool will be habitable for the the organisms to do their job. You should also not that your chlorine will attack these organisms, so it's best to be in normal or low ranges. In addition to providing livable ranges for the active ingredient to thrive in, make sure you take note of the information below to get the most out of each dosage: » Do not add shock or algaecides 7 days prior to application. » Works best in an outdoor pool, uncovered for at least 7 days. » Bio-Active does not work in mineral system pools. » Make sure your pool is free of algae or other contaminants. » Be sure to shut off UV, ozone, and chlorine feeders 15 minutes prior to, and 3 hours after, applying Bio-Active Safely lowers CYA levels within 10 days without needing to drain the pool. Eliminates chlorine lock due to high CYA. Use 1 bag for up to 25,000 gallons. Works best with water over 65 degrees Fahrenheit. I hope this helps anyone having troubles - I know it's a bear of a situation and VERY time consuming .... Don't you remember going to the lake and swimming or fishing, never once thinking of what microscopic things lay in wait? Having never once thought of PH levels or the like? We lived, didn't get sick and kept going back (this is in no way meant to diminish anyone's adverse reactions to such events - merely a personal reflection). Do you think lake or ocean water is cleaner than your pool? Yet here we all are, busting our hump, spending hours and hundreds of dollars even when our pools are sparkling clean and we can't see anything wrong (as is my case - before all this process I mentioned, my water was clear, had no odor and looked great ... but it had been a while since I'd had it professionally tested and wasn't sure if MY test stuff was still optimal, so I took it in and BAM! There was evil lurking in that falsely serene setting of a sparkling pool ready for swimming. Sounds fishy to me, but - here I am, tired, annoyed, poorer and ready to just fill it in and plant grass!
Review: DO NOT USE THIS USELESS AND POTENTIALLY DESTRUCTIVE PRODUCT - Wish I could say this had no effect. It has actually had a negative effect. I now find myself in the same situation Amir did. I bought one packet of this stuff at the beginning May. My CYA levels were high - between 100 and 150 ppm. I figured might as well give it a shot. Against better judgement, I ordered a packet of this stuff even after seeing the average rating sucks - because my pool guy recommended it. The first packet did absolutely nothing. My chlorine level, pH, total alkalinity and water temperature were all perfect prior to adding the packet. I ran my pump 24/7 after adding the packet. I saw absolutely no drop in my CYA level. I should have stopped there. But I figured what the hell, I'll give it another go. I added another packet 9 days ago. Again, my chlorine level, pH, total alkalinity and water temperature were all perfect prior to adding the packet. This time around, I saw my pH drop drastically within a day of adding the packet. In 3 years of owning my pool this has not happened once to me. And then I saw my chlorine level bottom out completely. My pool became cloudy. I thought it was due to low chlorine. I live in Colorado - liquid chlorine is not readily available. I called several pool shops in the area - no one carries it. So I bought a bucket of calcium hypochlorite. I began adding small amounts to my pool to try and bring the level back up. I have a chlorine feeder and use tablets normally throughout the swimming season. I've never had to have my feeder valve above a 2 setting. I set it to 5. I also had replaced all valves for my feeder about a month ago. My chlorine levels would go up when I added cal-hypo, then tank back out to absolutely nothing within a day - both for total and free chlorine. My pool stayed cloudy. I was adding algaecide and super blue. Still had cloudy water. Then I decided to backwash my filter. Normally I do this every 2 weeks, and I had actually backwashed it a week early just prior to adding this crap to my water. To my surprise, absolutely no media (I have a DE filter) came out in the water when I backwashed it. Normally it leaves a little white area in my lawn where I do. This time around...there was nothing whatsoever. My filter had no media in it at all - despite being recharged a week earlier. In 3 years of owning my pool this has not happened once to me. After recharging my filter, my water finally cleared back up. But my chlorine problems remain. My regular pool people recommended going big - so I put 5 lbs of cal-hpyo into my 20,000 gallon pool. The chlorine levels were higher than I've ever seen then. And then the next day....they were right back to 0, both total and free chlorine. I've gone through about 15 lbs of cal-hypo and around 10 pounds of 3" tablets in the last 5 days and this morning when I went out to check my chlorine levels....they were right back to 0. In 3 years of owning my pool this has not happened once to me. I'm going to have to wind up draining and refilling my pool if this cycle doesn't stop. This product is not only useless, but it can actually be destructive. Please listen to other folks and don't make the same mistake I did.

## Features

- Reduces CYA Levels: Lowers cyanuric acid levels by up to 50 ppm per treatment — no draining or dilution required; ideal for drought-restricted areas
- Eliminates Chlorine-Lock: High CYA causes chlorine to become ineffective; Bio-Active breaks down CYA at a molecular level to restore sanitizer performance
- Non-Toxic & Made in the USA: 100% natural, non-allergenic, non-polluting and leaves no residue in your pool water after treatment
- Works for Pools Up to 25,000 Gallons: One 8 oz. bottle treats pools up to 25,000 gallons; use 16 oz. size for larger pools up to 50,000 gallons
- Compatible with All Pool Types: Safe for use in chlorine and saltwater pools; suitable for residential and commercial pools with CYA levels of 30–330 ppm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00X8DJWWI |
| Best Sellers Rank | #14,794 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #65 in Swimming Pool Balancers |
| Brand | Bio-Active Products, Inc. |
| Brand Name | Bio-Active Products, Inc. |
| Customer Reviews | 3.5 out of 5 stars 1,899 Reviews |
| Item Form | Powder |
| Item Type Name | Cyanuric Acid Reducer |
| Item Weight | 8 ounces |
| Manufacturer | Bio-Active Products, Inc. |
| Manufacturer Part Number | BIO-CAR 8 |
| Manufacturer Warranty Description | Please call 866-765-2704 for all warranty concerns |
| Model Number | BIO-CAR 8 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Product Benefits | Reduces cyanuric acid levels, eliminates chlorine-lock, allows sanitizers to be more effective, and is non-toxic, non-allergenic, non-polluting with no residue Product Benefits Reduces cyanuric acid levels, eliminates chlorine-lock, allows sanitizers to be more effective, and is non-toxic, non-allergenic, non-polluting with no residue See more |
| UPC | 894267002101 |
| Unit Count | 8.0 Ounce |

## Product Details

- **Brand:** Bio-Active Products, Inc.
- **Item Form:** Powder
- **Item Weight:** 0.5 Pounds
- **UPC:** 894267002101

## Images

![Bio-Active 100% Cyanuric Acid Reducer for Swimming Pools │ Non-Toxic CYA Reducer Powder │ 8 oz. │ 1-Pack - Image 1](https://m.media-amazon.com/images/I/61H4uJ8rWpL.jpg)

## Available Options

This product comes in different **Size, Number Of Items** options.

## Questions & Answers

**Q: how many days until the CYA drops ?**
A: A few days to a week. It works up to 10 days. We have a pool service company and are 2 for 2 on dropping the CYA without draining using this product. You have to follow the directions and make sure the water is balanced correctly and the temperature is all within range. The last pool dropped from over 100 to 80 in 3 days.

**Q: How to use this with minimal chlorine without getting algae? In Central Texas and water temp is 76 degrees**
A: I add liquid chlorine to keep the level around 4. I don't get alge at that level. The tablets are good for stability but add too much cyuranic acid if you only use them.

**Q: Can you use this in a hot tub?**
A: This product would certainly work in a hot tub as long as all directions and dosages are adhered to according to the instructions. It has worked for many customers, but results can vary depending on unique circumstances.

**Q: Does  The compound "Dextrose Monohydrate" accomplish the same thing?**
A: I wouldn't think that it would.... adding sugar to the pool won't reduce CYA

## Customer Reviews

### ⭐⭐⭐⭐⭐ It worked for me to a degree ...
*by R***M on May 19, 2017*

Worked as expected - will need another bag though, have just a bit more to go before I reach the right number. When I purchased, my CYA was around 300 or more (lets put it this way, I was way passed the 100 mark on the tube) - I have a 10k and the bag says it will treat up to 25k ... well, I am now at 100. So, it works, but you may need more than one bag depending on size of pool and amount of CYA in pool. Also you should note that it can take up to 10 days to lower your levels - so I will have to wait another 6 days before adding a second bag to be sure. Leslie's charges $49.95, so this is a good price. Now, this wasn't the only thing wrong with my levels, so how it worked for me, may not be what you need (and I suppose I won't really know if it works until I add the second bag and see if it drops to where it needs to be) How I did it : I took out my chlorine duck and let the pool do it's thing (running 8 hours a day) for about 10 days with no chems. Then I washed my filters thoroughly and added the Phos Killer (from walmart $9 - kills 1000 ppm) and ran the pool for 48 hours non stop Then I turned the system off for 24 hours and let the pool sit After 24 hours I washed my filters again and then added my duck back into the pool and let the pool run a normal cycle for another day before FINALLY adding the whole bag of CYA into the skimmer and let the pool run normal cycles for 72 hours before adding the Alkaline Up - then ran it for 12 hours and when I took my water to be tested everything was back to normal except I'm now at a 100 on my CYA rather than 300, so if after 6 more days the levels aren't where they need to be, I think one more bag should do it This is the information I was given about using the Bio-Active product::: Bio-Active uses natural cultures to reduce your CYA, be sure your pool will be habitable for the the organisms to do their job. You should also not that your chlorine will attack these organisms, so it's best to be in normal or low ranges. In addition to providing livable ranges for the active ingredient to thrive in, make sure you take note of the information below to get the most out of each dosage: » Do not add shock or algaecides 7 days prior to application. » Works best in an outdoor pool, uncovered for at least 7 days. » Bio-Active does not work in mineral system pools. » Make sure your pool is free of algae or other contaminants. » Be sure to shut off UV, ozone, and chlorine feeders 15 minutes prior to, and 3 hours after, applying Bio-Active Safely lowers CYA levels within 10 days without needing to drain the pool. Eliminates chlorine lock due to high CYA. Use 1 bag for up to 25,000 gallons. Works best with water over 65 degrees Fahrenheit. I hope this helps anyone having troubles - I know it's a bear of a situation and VERY time consuming .... Don't you remember going to the lake and swimming or fishing, never once thinking of what microscopic things lay in wait? Having never once thought of PH levels or the like? We lived, didn't get sick and kept going back (this is in no way meant to diminish anyone's adverse reactions to such events - merely a personal reflection). Do you think lake or ocean water is cleaner than your pool? Yet here we all are, busting our hump, spending hours and hundreds of dollars even when our pools are sparkling clean and we can't see anything wrong (as is my case - before all this process I mentioned, my water was clear, had no odor and looked great ... but it had been a while since I'd had it professionally tested and wasn't sure if MY test stuff was still optimal, so I took it in and BAM! There was evil lurking in that falsely serene setting of a sparkling pool ready for swimming. Sounds fishy to me, but - here I am, tired, annoyed, poorer and ready to just fill it in and plant grass!

### ⭐ DO NOT USE THIS USELESS AND POTENTIALLY DESTRUCTIVE PRODUCT
*by C***S on June 27, 2016*

Wish I could say this had no effect. It has actually had a negative effect. I now find myself in the same situation Amir did. I bought one packet of this stuff at the beginning May. My CYA levels were high - between 100 and 150 ppm. I figured might as well give it a shot. Against better judgement, I ordered a packet of this stuff even after seeing the average rating sucks - because my pool guy recommended it. The first packet did absolutely nothing. My chlorine level, pH, total alkalinity and water temperature were all perfect prior to adding the packet. I ran my pump 24/7 after adding the packet. I saw absolutely no drop in my CYA level. I should have stopped there. But I figured what the hell, I'll give it another go. I added another packet 9 days ago. Again, my chlorine level, pH, total alkalinity and water temperature were all perfect prior to adding the packet. This time around, I saw my pH drop drastically within a day of adding the packet. In 3 years of owning my pool this has not happened once to me. And then I saw my chlorine level bottom out completely. My pool became cloudy. I thought it was due to low chlorine. I live in Colorado - liquid chlorine is not readily available. I called several pool shops in the area - no one carries it. So I bought a bucket of calcium hypochlorite. I began adding small amounts to my pool to try and bring the level back up. I have a chlorine feeder and use tablets normally throughout the swimming season. I've never had to have my feeder valve above a 2 setting. I set it to 5. I also had replaced all valves for my feeder about a month ago. My chlorine levels would go up when I added cal-hypo, then tank back out to absolutely nothing within a day - both for total and free chlorine. My pool stayed cloudy. I was adding algaecide and super blue. Still had cloudy water. Then I decided to backwash my filter. Normally I do this every 2 weeks, and I had actually backwashed it a week early just prior to adding this crap to my water. To my surprise, absolutely no media (I have a DE filter) came out in the water when I backwashed it. Normally it leaves a little white area in my lawn where I do. This time around...there was nothing whatsoever. My filter had no media in it at all - despite being recharged a week earlier. In 3 years of owning my pool this has not happened once to me. After recharging my filter, my water finally cleared back up. But my chlorine problems remain. My regular pool people recommended going big - so I put 5 lbs of cal-hpyo into my 20,000 gallon pool. The chlorine levels were higher than I've ever seen then. And then the next day....they were right back to 0, both total and free chlorine. I've gone through about 15 lbs of cal-hypo and around 10 pounds of 3" tablets in the last 5 days and this morning when I went out to check my chlorine levels....they were right back to 0. In 3 years of owning my pool this has not happened once to me. I'm going to have to wind up draining and refilling my pool if this cycle doesn't stop. This product is not only useless, but it can actually be destructive. Please listen to other folks and don't make the same mistake I did.

### ⭐⭐⭐⭐⭐ Worked better than expected, long term benefits
*by L***S on May 15, 2019*

Followed ALL directions. Pool of 20,000 gallons had CYA of at least 170, possibly as high as 220, based on Aquacheck 7 test strip accuracy. First application in August, 2018. One week later, test strip shows no change. Two weeks later, test strip shows some improvement. During this time, I kept chlorine in the 2-5% range, nothing special, 7.5 pH, water temp near 80 deg. Purchased Taylor test kit with CYA and Free Chlorine capability. Next test, about 3 weeks after first application, Taylor test shows CYA above the 150 range. Had to shock the pool for algae, so I figured the CYA reducer would be destroyed by the high chlorine. Nope. By October, just as I was about to use second pouch treatment, Taylor test shows CYA clearly in the 110 - 120 range. The water would soon be too cold to use of second packet, so I figured to apply it in late Spring. Through the winter, every month the CYA was lower, currently reading at the 30-50 range on the test strip and at under 40 on the Taylor test. The product clearly worked. No question. Unless you want to argue the CYA went down on its own, the product clearly reduced the 170 - 220 range CYA to about 110 after 4 months and to under 60 by the end of Winter. It would appear that, whatever the microbial cultures may be, they can remain active through multiple chlorine shock treatments. We live in CA and I just cannot waste water to drain the pool. If you are in a hurry to reduce CYA, drain the pool. But my experience is that a single application of this product reduced my CYA level by some 75% in 7-8 months, which included multiple chlorine shocks to treat for algae (I run a high pH for cold water during the winter). I will not likely use the second packet at all, but give it away to a neighbor. Highly recommended. I suspect that those using this product are in a hurry, use too much, do not maintain their chlorine, pH or calcium, etc. If my CYA drops any further, I will go back to using the di/tri-chlor tablets this Summer to raise the CYA a bit.

## Frequently Bought Together

- Bio-Active BA-CAR-08 Non Polluting 100-Percent Cyanuric Acid Reducer Powder for Commercial and Residential Swimming Pools, 8 Ounces.
- EASYTEST 9-Way Pool Test Strips, 140 Strips for Hot tub and Spa, Accurate Testing pH, Total Chlorine, Free Chlorine, Bromine, Alkalinity, Total Hardness, Cyanuric Acid, Salt and Copper
- Cyanuric Acid (CYA) Reducer for Pool and Spa, Removes CYA Through Filtration 1IB

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-06-10*