Will these work for Phosguard?

They are very fine mesh to hold in the finest media particles. But water flows through them easily so I don't see a problem with them working with any media. So I'll say "Yes" they will work with Phosguard.

Would this work as a filter guard for an internal filter in a freshwater aquarium?

If the internal filter can fit into the bag, I think it's a good idea! You can search on amazon:" Alegi fine bags" for different sizes!

Are the zippers made of metal or plastic?

This is drawstring bags. It doesn't contain any metal. is completely safe for both fresh and saltwater aquariums.

I have a cascade 1500 filter from penn and plax can I put 3 purigen bags in 3 of my trays amd what size bad should I use for a 55 gallon tank?

A basic purigen bag will treat up to 100 gallons for 6 months or so with proper regeneration. I use a 250ml bottle of purigen in one of the alegi media bags and have it in a wet/dry for a 90g tank. You won't need 3 for a 55. One will do fine.

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Description

🐠 Elevate your aquarium game with precision filtration that keeps your ecosystem thriving!

SECURE DRAWSTRING CLOSURE - Locks in filter media, protecting pumps and fish alike
ULTRA FINE 180 MICRON MESH - Captures the tiniest resins for crystal-clear water
PERFECT FIT FOR 100 ML MEDIA - Optimized size for maximum filtration efficiency
HEAVY DUTY NYLON CONSTRUCTION - Built to last through countless cleanings without wear
CHEMICAL RESISTANT ODOR FREE - Safe for aquatic life, unaffected by bleach or acids

The ALEGI Media Filter Bag is a premium 180-micron ultra-fine mesh filter bag designed for very fine resins and activated carbon. Measuring 7.5" by 3.6", it features a secure drawstring closure to prevent media leakage and protect pumps and fish. Made from durable, chemical-resistant nylon with heavy-duty stitching, it is reusable and easy to clean, ensuring long-lasting performance and safe, crystal-clear aquarium water.

Reviews

M**.

Keeps biofilm from clogging drip emitters 🙌🏼

4.02.2024

M**K

Works With Purigen

8.08.2025

G**A

Uso para purigen

Cumple con el objetivo por el cual lo compre, para usarlo con purigen

8.12.2025

G**X

Excelente producto

Excelente producto y de buena cálidad

28.09.2023

K**.

well worth the money

14.08.2025

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฿1754

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ASIN	B083Q4R7KB
Best Sellers Rank	#39,808 in Pet Supplies ( See Top 100 in Pet Supplies ) #431 in Filter Accessories
Country of Origin	USA
Item Weight	18 g
Manufacturer	ALEGI
Net Quantity	3.0 Count
Package Dimensions	17.27 x 9.65 x 1.02 cm; 18 g

ALEGI Media Filter Bag Aquarium Extra Fine,Reusable 180 Micron Drawstring Mesh Filter Bags for Very Fine Resins Filter (7.5"*3.6" (3 Pack))

Description

Specifications

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Common Questions