Marina Slim Filter Carbon Plus Ceramic Cartridge - 3-Pack

These filter cartridges work well. They have a good amount of Carbon in them and trap a bunch of dirt.

Don't replace them all at the same time. Even thought the sponge on the intake holds a large colony of beneficial bacteria, a lot resides in the filters as well. So give it a couple weeks between replacing each cartridge.

When I purchased this, it was $5 per pack (free standard shipping). It looks like it is now a Prime item, but the price has gone up to over $6 (still not extremely expensive considering they need to be changed about once every 2 weeks). The product itself works great, and fits the filter for the tank I purchased. So far no complaints.

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These filters are perfect for small fish tanks. If you use as instructed the water will not become murky. I change one every week, which always keeps a new one in there. Amazon has them for a better price than my local pet supply store. Highly recommend!

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My filter uses four filters...these are packaged with three filters. Since the company says to never change all filters at once, I purchased two packages to change two filters three times.

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High quality, don't make aquarium dirty. fast shipping. My fish like this very much. I use it more like 1 month and to remain happy to have it.

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