A couple of weeks ago, my tank zeroed out on all parameters IE ammonia, trites, and trates. at this time I added 2 pieces of coral. They were some buttons, and green star polyps. There were already mushrooms in there, and about a week after I added the cleaners. Now my parameters are ammonia = 0 nitrites are 0 and my nitrates are 10. I did a 10 gal water change on Tues for approximately 60 gals of volume. My trates are still at 10. Now heres the kicker. Last night, I know one of my cleaners attempted to molt. Unfortunately he succumbed to I think his tank mates 2 other cleaners, and a damsel. So with that Im wondering if the H20 change triggered a molt. What do you guys think the max trates that are allowed for cleaners ?