Hi everyone I need expertise, so I had an aquarium for a year upgraded to a 600L and that's when the problems began, all was well for 2 weeks I premade sea water and live rock to ho with my existing in my current aquarium and all was well, then 4 weeks past I see a white spot, I assume ich. So i treated my aquarium for ich with reef safe and then it started to recover, worse cases I tried to fish out to put in my quarantine aquarium and treat with copper. Now, all my levels are find, Ammonia, nitrite, nitrate, phosphate, salt etc but with treating with the CU my fish died a few days after, checked levels they weren't toxic. In my display I have been upping the feeding, kept things quiet, treated and the white spots subsided but for the last month they have had what is in the picture, the first sign of appetite loss is today after nearly 2 months of problems. I know you will say quratube but honestly I do not want to as it stresses the fish to catch them and then when I treat them the shock kills them. So this thing is now causing their tails to break, loss of appetite, fine powder on eyes and body, all the inverts are fine, the only thing i have lost is the anemone. Anyway please see pictures below, I have tried so many different treatments and nothing is working!! Please help. I thought velvet but other than kill about 7 fish in 2 months, some are still going so I'm not sure..