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Freshwater Aquarium/ammonia neutralizing crystals


I am having a hard time finding out exactly what are ammonia neutralzing crystals.

I was able to find out the main ingrediants of pH up and pH down, but absolutely nothing about these crystals...

Do you know?

Thanks, JM


ammonia neutralizing crystals are a filter additive that claim to neutralize ammonia. In short, they do nothing to ammonia. All they are good for is making money for the pet stores. The only way to control high ammonia is with water changes of 20% to 50% depending on how high the ammonia content is. Your filter should contain an activated carbon cartridge which should be replaced once a month. Other than these cartridges and water conditioner, you should not be adding any other chemicals to your tank.

Hope this helps you good luck!


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Richard Hight


I own and maintain several freshwater aquariums from 2 to 180 gallon. I can answer most questions about freshwater aquariums, including setup, cycling, maintenance, compatible tank mates, feeding. Moving? I've moved fish both across town and across the country and can help you get your little aquatic friends to their new home safely. I know and have experience with most freshwater community fish, South American Cichlids and African Cichlids. I don't answer questions about Goldfish or keeping Goldfish with Tropical Fish. I also don't answer questions about keeping crustaceans (shrimp, snails, crabs etc) with Tropical Fish, nor questions about saltwater fish or aquariums. I'm not available to answer questions on weekends, this is when I do maintenance on my own tanks.


Many years of personal experience with community tank fish, semi-aggressive fish (Barbs, Tetras, etc), Angels, South American Cichlids and African Cichlids.

HSG 2010-2011 prof

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