Penn-Plax Small World Filter Media Fish Cartridges

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About This Item

Details

  • Replacement cartridges are specifically designed for Small Word Filter model SWF1 (sold separately).
  • Supercharged with carbon and zeolite crystals, these cartridges work to absorb ammonia, nitrites, nitrates and phosphates in a timely manner.
  • They also help remove harmful chemicals and toxins, clear up discolorations and reduce foul odors from your aquarium, tank or habitat.
  • Each cartridge contains a bio sponge for physical filtration of larger particulate matter, plus biological filtration that optimizes the colonization of anaerobic bacteria.
  • Simple to install! Just rinse with warm water to remove loose dust.

Instructions

Questions & Answers

1 Customer Questions

How many per pack?

Answer by Chewy • Dec 10, 2024
Each pack includes 2 filtration units.
Reviews
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4.8
Rated 4.8 out of 5 stars
13 Ratings
Terms & Conditions

5 Customer Reviews

Rated 5 out of 5 stars
By Brenda on Jan 5, 2026

great delivery and product

I have a small tank and besides fitting, I really think it improves my fish’s life.

I have a small tank and besides fitting, I really think it improves my fish’s life.

Rated 5 out of 5 stars
By KarenPH on May 29, 2025

Very convenient

This filter system is very convenient when traveling with my two goldfish. They ride in a plastic tote box with this filter system attached to a battery powered

This filter system is very convenient when traveling with my two goldfish. They ride in a plastic tote box with this filter system attached to a battery powered air pump. It works well to keep their space cleaner and aerated until being transfered back into their home aquarium.

Rated 2 out of 5 stars
By 80sGregg on Jul 31, 2025

Not refillable.

Cost is too high for a one time use. If it was refillable, maybe 4 stars.

Cost is too high for a one time use. If it was refillable, maybe 4 stars.

Rated 5 out of 5 stars
By Debbie on Sep 10, 2025

Hard to get item

Chewy has it! A great price too!

Chewy has it! A great price too!

Rated 5 out of 5 stars
By Rose on Sep 14, 2025

Quick delivery and in stock

Good for my betta tank

Good for my betta tank