Help! My beautiful brain coral has started to receed! I'll try to get a photo to attach tonight, but thought I'd post this and see if anyone might have some thoughts for me. Here are some tank specs:
Temp: 77 degrees
SG: 1.023
Ammonia: trace
Nitrites: trace
Nitrates: (have recently spiked at 40 mg...two water changes have it down to 10 and dropping) :?
Ph: 8.0