Hi, my step dad has recently passed away and has left his tank behind. I have basic knowledge on how to do water changes,feed, clean etc. however when I did the last water change and the colt coral is not the same. I spoke to one of his friends and he said its "sulking" I'm not sure if this is correct. It has been a week and it has still not opened up since the change. All the other corals and fish are the same as before. What could it be ?
Thanks
Lewis
Thanks
Lewis
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