Need some help with Refugium. I just recently started my tank over from scratch (running now for almost 2 months). I had a custom sump built with a 5gal refugium . The refugium sets inside the sump but is a separate chamber from the sump flow. The refugium is fed by a small pump rated at 237 gph, but have it restricted to probably 2/3 flow with ball valve and has a spray bar submerged in the refugium. The pumps sends water from the sock chamber into the refugium, and the refugium over flows into the return chamber. The refugium has rock rubble spread across the bottom and a ball of cheato about the size of a softball. The refugium is lit by a reefbreeders pico refugium light running 8 hrs a night. The cheato has been in the refugium for about two weeks now. I thought everything was going well but since the cheato doesn't really tumble I thought I would just turn it over by hand. When I did the cheato started to break apart. The top side seemed firm but appeared the pieces came from the bottom when I was trying to flip it. What could be causing the issue. The cheato is green an looks the correct color but just appears to be falling apart. The nitrates in my tank are somewhere between 0 and 5ppm. Is this normal? It this is a sign of the cheato dieting?
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