Premium Bio Capsules for Fish Tank - Natural Water Cleaner & Clarifier for Freshwater & Saltwater Aquariums - Maintains Crystal Clear Water for Healthy Fish - Ideal for Home, Office & Pet Store Aquariums

This product keeps my fish tank clean. I use it weekly and it keeps the water clear. I use one tablet weekly. Some people have stated that they just drop a tablet in their tank. I open the tablets and drop the content in the water. It does not harm my fish. I have reordered this product several times.