I also had pale corals for a while, but after feeding Reef Chili and feeding more, it really improved the colour. I was also having trouble with zoas shrinking, and that seems to be improving as well. I've been following a thread on R2R by a fellow (Bubba) who has amazing SPS, and he advocates feeding generously.
Yes, my cyphastrea is on the sand. I wonder if it's a flow issue. I have sand and so I don't have a lot of current blasting around.
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 Maggie
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