What are you water parameters? And those corals tend to go thru stages where they shrink up and look terrible in order to shred their outer layer. Make sure it has some flow around it, but not too much.
Hello and welcome to the site...glad to have you aboard. I'd just leave them alone and let the crabs finish acclimating to your tank. Sometimes, inverts will not move when 1st placed in new systems, but they seem to become active after a few hours. Some people have reported their crabs and...
I've used it for a lil over a year, and i like the product, and my corals seem to love it. They all have better extensions, growth and color. Just continue to use less than the recommended dosage, or it will cause algae issues.
Hello and welcome to the site... glad to have you aboard. Do you have a red light bulb over your tank, that's making your tank look red? And sorry, but I can't make out the second pic at all. My first guess was maybe mushroom corals.