I've had my tank cycling with a gourami in it for a month now. That past 2 weeks, there hasn't been any ammonia but the nitrites are getting really high. They're well about 10. I was wondering if this is normal? I introduced some established gravel into the tank 5 days ago, but it hasn't changed the nitrites. Also, the PH has been pretty high the entire time (8.5). Just wondering if that is having an effect on it too?
Thanks
Thanks