Review on 💦 Aqua Clear A612 50 Activated Carbon Filter, White, 2.4 Ounce by Tara Perry

We have a 20 gallon tank with 2-4 inch goldfish and 2 small cleaner fish (4 fish total). We spent two years with a greenish tank that we couldn't easily get clean. This amazing product was recommended at the local pet store. If only I knew, I just need more coal to filter the garbage. I use this product instead of the recommended activated carbon filters. I change monthly and also vacuum the stones and change the water at the same time. Finally a clean tank!