Hi everyone, I have a 240L tank with 6 cichlids, 2 plecos, 2 clown loaches and one pictus Catfish. The tank is recently cycled, ammonia and nitrite both zero. The temp is 27.5 degrees and has been since I started the tank 6 weeks ago. The ph is about 7.4. So I had one pictus Catfish, which I...