4 weeks ago I got 5 Yumas, whiah all arived looking good except that one had become detached from its coral gravel substrate and was floating free:eek2:. I put it in a perforated plastic tub covered with net, and put him at the bottom of the main tank (30" deep, 2x 54watt T5s) then I put him in the sump for a while thinking the light might be too bright for him, then put him back in the main tank again.....anyway throughout all this he has failed to re-attach to his gravel and his colour has been gradually fading and is now a very pale yellowy-green colour.....
If anyone has any suggestions as to what I could do next I would be very grateful!!!

If anyone has any suggestions as to what I could do next I would be very grateful!!!
