So I'm trying to figure out why my angel fry are growing so slowly. They are about 10 weeks old, and most of them are pea size, not including fins. From what I've read they should be almost sellable by now. The tank they are in is very heavily planted, so I always read zero nitrates, and they are getting baby brine shrimp 3x per day with water changes every Saturday of about 60 percent. Anything I'm doing wrong?

