imagitarium Zeolite Crystals for Freshwater Aquariums 36.5 oz.

The use of zeolite in a new uncycled tank is not recommended (unless in an emergency where life is threatened) as the removal of the ammonia will greatly reduce the food for the newly developing nitrifying bacteria and so will greatly increase the time it takes to cycle the tank. Better to use a product that alters the ammonia into a harmless state that still feeds the bacteria.Never add 'revitaliser' type products to your tank containing Zeolite. These products are salt based and so will release the absorbed toxic ammonia back into the water.Using an accurate test kit, take an ammonia reading of your water in ppm (parts per million) and divide by 1.5. Then multiply by the numbers of litres in your tank. This final volume is the number of grams of Zeolite needed. 1 tsp teaspoon of Zeolite is ~6 Grams.

No more cloudy water and sluggish fisg

So far so good As it seems to keep the fish tank cleaner and longer

I use in my aquarium for ammonia, not sure if it's working. Decent price for the amount though

Large frequent water changes in my discus tank create nitrite spikes due to chloramine in the water. Dropping this in the resivoir overnight with the dechlorinator strips out the ammonia created in that process before it goes into the tank. Works like a charm. No ammonia = no nitrites.

I am having a great deal of trouble with a 5 gal tank that lost it's cycling after I added 5 small fish (Rasbora's). Ammonia level continue to stays between 4 and 8 ppm. I keep it neutralized by adding Prime, try to enduce cycling by using Stability and try to get rid of the ammonia (or at least make it not as lethal) by using AmGuard. This has been going on for over 2 months (since I added fish to the tank). I find it hard to believe that 5 little 1/2" fish are overstocking this tank. I do water changes on this weekly sometimes more often if I think that I have overfed them (which is easy to do - small fish that seem to be able to consume a lot of food some days, very little other days). This product, which was recommended to me by a forum I joined has not helped either. I had to put it in a bag below the filter because there is not enough room in the AquaClear filter for any more media. The water from the filter flows through it as best as I can make it. I wish I new it required so many crystals - there are few filters that are big enough to have room for this stuff without removing a couple of other critical media. So your only choice is to purchase a second filter and add it alone. If this were a bigger tank I would certainly do that (In fact I have a spare filter) but there is no room for a second filter in a 5 gallon tank. Perhaps it would work better then.

Great value for the price and really does a great job