Hi everyone. Been a long time since I've posted but I don't know what to do. I have a 10 gallon IM tank with a Prime HD over it. It's primarily a nem tank with 4 healthy RBTA's and on GBTA. The GBTA moved around a lot at first and finally found a home for several months on the back side of my scape. Go figure. Any way I never saw it much unless I peeked around the side to try see it. All was well. Well as of late of noticed it not there. Couldn't find it. Now it's came around to the right side of the tank and looks pretty poor. Still has a good foot hold but looks bad. Water is good and just did another 4 gallon change. I do this at least twice a month. What can I do???? How can I help it??? It's always seemed to not really like the light too much o think. Hard to tell. Any input to save this would be greatly appreciated.