Originally Posted by spoonman
Dose your ammonia back up to 4ppm and track nitrite and ammonia and see what happens. If you slack on your ammonia source, the cycle will stall.
The shrimp is a constant ammonia source, and the cycle did not stall.
First off i would be getting new test kit. The is no way nitrates can from high to 0. Meaning you have a bad test kit.
Get a new kit and retest. Once you see nitrates, remove the shrimp and the cycle will complete with a week or 2.
Until you get a new test kit i would assume that your nitrates a 0.
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