tonight i noticed for the first time a soft fleshy growth on the side of one of my seahorse, which is now in isolation. i have 6 total ,4 shrimpfish, and 3 pipefish in a 90 gal. 6" sand bottom with a 40 gal. fuge. salinity is .023, ph runs between 8.0 and 8.3, temp around 72. please excuse the...