Review on 🐠 CNZ Media Filter Bags: Premium Activated Carbon Charcoal for Effective Filtration - Perfect for Aquarium Fish Tanks, Ponds, and Canister Filters - 4 lb, Black C4PK by Rebecca Carey

What I like about these bags is that they are zippered so you can make your own mesh bag for smaller aquariums. I have a 750 gallon pond with my 2.1 foot carp that I call my water pups. I give away 2 bags every month. It keeps the water clean and free from toxins. I also throw the bag in my 100 gallon quarantine pond. I have a 29 gallon tropical tank. I make small mesh bags out of ziplock bags and throw them in my tropical aquarium. Keeps water crystal clear as pre-packed carbon cartridges don't last long in my filter. I hope they don't stop like I bought the last ones.