If I increase salinity from freshwater to brackish will the tank cycle agian. I went from freshwater to brackish and everything has been good so far but I was wondering if I can expect to see amonia spike. My brackish is at 1.010 currently this is up from freshwater one week ago. I am planning on going to 1.015 to 1.020. the tank has 2 GSP and a white cheek moray eel in it and I just want to know if I will need to watch it close for re-cycling to occur. at what rate should I increase salinity, is there a general rule? thanks.