Originally Posted by F1shMan
Yup I already have a test kit for my 75 FOWLR. When you say dead shrimp what do you mean?
If nothing on the rock you bring in dies, then you need something to rot in the tank and cause your first ammonia spike. A raw shrimp works well, other alternatives are fish food (AKA "feeding an empty tank") and lab grade pure ammonia (added by the drop). After your test kit shows ammonia go up and back down, you know the bacteria load in the tank is large enough to support your first fish. If you never see ammonia or nitrites go up, you'll never know what the load capacity is.