Ya I have a rainbow that I added to my tank recently and had also been looking ****ed off lately as well, hoping he perks up soon as they are really beautiful nems. I also have t5 lights but had an alk drop last week and have been slowly raising it back up, will be adding new bulbs and reflectors to lights, plus will be changing salts soon so just have to wait and see how he is once things get stabilized again.
I will say though that you have a nice nem there regardless of which kind it is, so if you satisfied with it then I wouldnt worry about it to much