I have a couple questions regarding some coral in my tank.
I've had an open brain in my tank for about a week now. Sometimes it looks full, sometimes not quite so much. I noticed three 'ports' on top that look like that might be how they breathe? Anyway, there was a black strand coming from one opening and while I watched, the whole brain contracted and blew a bunch of brown stuff that looked like silly string out of all three openings. It continued for maybe two seconds. It dissolved rather quickly (or maybe just broke up when it hit the current from the return) My question is, What was that all about?!
I bought a small rock covered with yellow.. polyps I guess they are.. or were. About an inch tall each with long thin tentacles that can retract. My blue-legged hermit crabs have decimated this colony. I've been moving the crabs to the sump as I catch them in the polyps. As of last night 2/3's of the polyps are gone and this morning I found three crabs at the drivethru again. My question is, if crabs eat coral, why are they a main ingredient in clean up crews? (as in "You need 50-100 hermit crabs in a tank that size") Also, what else would not be safe from hermit crabs?
I've had an open brain in my tank for about a week now. Sometimes it looks full, sometimes not quite so much. I noticed three 'ports' on top that look like that might be how they breathe? Anyway, there was a black strand coming from one opening and while I watched, the whole brain contracted and blew a bunch of brown stuff that looked like silly string out of all three openings. It continued for maybe two seconds. It dissolved rather quickly (or maybe just broke up when it hit the current from the return) My question is, What was that all about?!
I bought a small rock covered with yellow.. polyps I guess they are.. or were. About an inch tall each with long thin tentacles that can retract. My blue-legged hermit crabs have decimated this colony. I've been moving the crabs to the sump as I catch them in the polyps. As of last night 2/3's of the polyps are gone and this morning I found three crabs at the drivethru again. My question is, if crabs eat coral, why are they a main ingredient in clean up crews? (as in "You need 50-100 hermit crabs in a tank that size") Also, what else would not be safe from hermit crabs?
