My boyfriend and I started a saltwater tank with fish and
live rock we bought from a friend. We purchased our own tank and placed the fish and live rock in it with the assurance from our friend that all was healthy and good. So far the fish have fared fine.
However, I have noticed several strange growths in my tank. There are several strange things on one particular piece of live rock that did not come directly from the tank we got the fish from, but from his sister's saltwater tank. He at first stated that it might be green
bubble algae but after doing a little research the growths do not look at all like green bubble algae.
They look like the heads (or top halves?) of jelly fish in that they are generally round, and look almost like a transparent skin with small clusters of white mold growing on the inside... his sister did have anemones growing in her tank, but i can't seem to find one that looks like these particular growths. (i almost mistook them as part of the live rock until i noticed them growing). I can imagine them as something having hitched a ride on the rock because a star fish from her tank (albeit a very small one) also somehow got into our tank that was originally hers....
any ideas?