Originally Posted by johnkristie
Should I add another dose of nitrifying bacteria to help speed up the process?
Never rely on this stuff, it only adds false hope. Most if not all are just exspensive water in a fancy bottle
The spike in your nitrites should mean that the ammonia consuming bacteria has kicked in completely. Keep in mind that even though the tank has been set up 3Â½ weeks, your ammonia has only recently spiked. Once down and the nitrites rise that's where the waiting will usually come in. Ammonia can generally take a few day or more to rise and up to 2 weeks to subside depending on the source. The nitrite stage is typically the longest and can last anywhere from 2-4 weeks.
As I said, I think you should wait a bit longer before removing the shrimp. Once the ammonia is zero and the nitrites fall steadily without water changes, then remove the shrimp and wait until the NH3
are zero. Do a large water change once they are to reduce any high levels of nitrate and replensih the chemistry. You should then be good to go.
Have you got the QT
up and running yet? Wouldn't hurt to get that started so when the tank is ready, your first fish won't be that far behind