when ever i added corals to my tank, they look dead for the first few days sometimes a few polyps will dissapear but then after a few days they explode and grow, does anyone recall me super gluing yellow polyps to a rock and one to my finger? well those three yellow polyps have been sitting on small piece of dead coral covered in black slime i have to keep removing, well those three polyps on the bottom of my tank a few months ago have now become 12, yes, 12 full plump polyps and another tiny baby on its way.
however in your case, im asking, do you have any other corals in your tank? if those polyps are the only coral you have and they are not doing so well, there isnt anything to compair it to other then to upgrade your lighting and improve water conditions. this may be out there but if you have a clown fish it may be continuously rubbing against your polyps keeping them closed, i dont care for clows as they seem distructive in my personal and friends exp.
and as far as polyps, can anyone identify these guys?
id like to get some.