They are off to the side of my tank under PC lighting. The MH light is in the middle of my tank. It's in lower flow and I do feed them. When I got them and another colony, they hadn't been fed in a very long time. The person couldn't take care of their tank well anymore so they gave them to me. Everything else in my tank is doing great. Micromussa's, Dendro's, SPS, Lobo's. My tank conditions are good and that's why I can't figure out why they are fading away. =( I feel so bad for them. It's not like I neglect them at all. There are a few smaller polyps on the left side of the colony you can see. I want to try and save them if possible. I thought these were really beautiful. I love my babies. I will not ever buy these though. If the merletti's grow well, then I'd try them. I really like the look of Blasto's, but I've seen them start off good, then die. It's been slowly wasting away since March. It's actually been really slow. I can't figure out why.