How much will this make?

Mixed at 3ml per gallon it will make 320 gallons. Mixed at 5ml per gallon it will make 192 gallons.

Is this carbonate based?

Near neutral pH, ferric ions form insoluble solids and are thus not bioavailable. EDTA (and other chelating agents) address this problem, by forming soluble complexes that resist formation of hydroxides. EDTA increases the bioavailability and plant uptake of the metals in the soil

How long can this be kept and or stored

Product warranty on nutrients and supplements is 1 year past the date of manufacture. Stable shelf life can run past this substantially if unopened, but this time greatly depends on storage conditions. Once a product is opened, it should be used within 6 months, or ideally- the time it takes to cycle a production garden which is typically 12 weeks on average. Opened products may last longer than this, but it should not be expected to be the case.

Can this be used for Tomatoes, Blossom end rot?

Yes, this works well with Tomatoes.

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Botanicare Cal-Mag Plus, A Calcium, Magnesium, and Iron Plant Supplement, Corrects Common Plant Deficiencies, Add to Water or Use as a Spray, 2-0-0 NPK, 1-Gallon

Botanicare Cal-Mag Plus, A Calcium, Magnesium, and Iron Plant Supplement, Corrects Common Plant Deficiencies, Add to Water or Use as a Spray, 2-0-0 NPK, 1-Gallon

Product ID: 150273266

Details

Brand
Botanicare
Item form
Liquid
Item weight
4.67 kg
Liquid volume
3.78 Litres
Specific uses for product
Plant Growth

🌿Calcium, Magnesium & Iron boost

💧Mixes easily with water or spray

🧪2-0-0 NPK formula

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฿25334

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Description

🌱 Unlock your plants’ full potential with every drop!

GROWTH MAXIMIZER - Supports root, seed, and overall plant development with a fortified mineral blend.
DEFICIENCY DEFENDER - Corrects calcium, magnesium, and iron shortages for vibrant, healthy plants.
DUAL DELIVERY POWER - Apply as a foliar spray or mix with every watering for maximum nutrient uptake.
TRUSTED CROP SAVIOR - Highly rated by growers for rescuing and boosting yields even in challenging conditions.
VERSATILE APPLICATION - Use in soil, coco coir, containers, or hydro gardens—flexible for any grow setup.

Botanicare Cal-Mag Plus is a premium liquid supplement delivering essential calcium, magnesium, and iron with a 2-0-0 NPK ratio. Designed to correct common nutrient deficiencies, it enhances plant growth and resilience whether used in soil, coco coir, or hydroponic systems. Easy to mix or spray, it’s a must-have for professional and hobbyist growers aiming for lush, healthy crops and maximum yields.

Specifications

ASIN	B000J2CUPW
Best Sellers Rank	407,871 in Garden ( See Top 100 in Garden ) 1,615 in Hydroponic Nutrients & Additives
Brand	Botanicare
Brand Name	Botanicare
Coverage	Full
Customer Reviews	4.8 out of 5 stars 2,597 Reviews
Global Trade Identification Number	00757900241285
Included Components	Bottle with liquid supplement
Item Form	Liquid
Item Type Name	Calcium Magnesium & Iron Plant Supplement
Item Weight	4.67 kg
Item form	Liquid
Item weight	4.67 kg
Liquid Volume	3.78 Litres
Liquid volume	3.78 Litres
Manufacturer	Hawthorne Hydroponics, LLC
Mixing Ratio	5 ml/L
Model Number	BCCMGAL
Number of Items	1
Part Number	732115
Specific Uses For Product	Plant Growth, Root Development, Seed Development, Soil Conditioning
Specific uses for product	Plant Growth, Root Development, Seed Development, Soil Conditioning
Target Species	plants
UPC	714639490223 791090262002 783942912234 757900241285 765018456736 309277145590 702872551191
Unit Count	3780.0 millilitre

Reviews

E**T

Happy Peppers

I've been using Cal-Mag Plus for about 5 years now for my peppers. The peppers love the extra nutrients that are hard to find in other fertilizers. Very effective for pepper production and helps prevent blossom end rot. Pair this with your favorite fertilizer and you'll have happy plants.

6.04.2026

P**E

Super great product!

I buy this every year. I don't have tomatoes if I don't have this product.

5.04.2026

B**D

Works

Works well, I tried cheaper brands like cal magic and they got sick, Cal- Mag is the top of the line.

27.10.2025

S**R

Tomato’s are happy/ I’m happy

Tomatoes need calcium. Mine just started to show that tell tale sign of deficiency and they straighten right up and had a wonderful year. Gave them a few doses and backed off. Then a few more about 12-14 days later. Caught it early. Very grateful for this helpful product. Easy to mix , strength was excellent. . And a decent value for the return .

30.09.2025

B**N

Calcium

Happy with the product. My plants get micros they need and are happy.

17.12.2024

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฿25334

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In stock

Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Thailand.

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