usirchchris and dnvrbrown - you know i have live sand in the qt. I didn't even think about it till i tested i am sure its the live sand. I needed to take the sand out and I forgot. Well, as of 6:30 pb tang was doing really great in the sump/fug, he struggled for a while, but has made it so far. Yes, i know that taking him from 1.009 to 1.020 from 14 to 28ppm was a huge jump. i had no other choice at the time, he would have died from the ammonia spike, so i tried whatever i could, lesson learned, i hope it doesn't cost him his life. So, can he live in the sump/fug for a while, it has a uv, skimmer too? the reason i didn't put him back in the display was that he had a small amount of ich, hence the qt tank. the hypo- worked but its only been a week. any advice what to do? he got ich from the flame angel stressing him. if i rearrange the rocks would this calm the flame angel down? i have a 75 gal with lr, crabs, snails, orange spotted goby, scopas tang, royal gramma and a flame. please give me your suggestions?