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[APD] RE: urea/NH4, fishload and algae

STOP thinking like a fishkeeper and start thinking like an aquatic gardener.

Urea is a byproduct of animal metabolism and will NOT be found in an aquarium, unless you are keeping sharks as pets (sharks are the only fish to secrete urea).

In a properly set up and maintained planted aquarium the waste secreted by fish (NH3/NH4, depending on pH) will be almost instantly absorbed by the plants. There is no need of any "nitrogen cycle" bacteria - the plants do it better.

You don't need a fluidized filter, or a nitrifying filter, or a wet-dry filter if you have PLANTS.

James Purchase

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