The best part is that we don’t have to worry about it draining water from the tank should it malfunction/break. Happy purchase.
It saved my troubled tank. It had a bacteria bloom and I kept losing my fishes. Frequent water changes, medications, running new and old filters but nothing worked until I tried these cubes. No chemicals, no noise, nothing to install but the small cubes just work. Looks like my fishes are happy too.
Good purifiers, easy to put in. Lasts quite long for our aquarium. You can rinse and re use, we'll use these for every filter change.
Part of a highly effective system to keep you and your fish happy! A must for all fish tanks.