Hello all, I am new to salt water aquariums. I started up a few months back and until now, I haven't had any problems. First off, my tank has been turning green lately. I drained half the water about 3 weeks ago and replaced it with new. It stayed clear for a few days but now its back to having a green tint. Secondly, there are these hair like things growing on the rock as well as on the hermit crabs. Here are some pictures of the tank, the filters and the hairy rock. Please help me correct this. I havent lost any fish in about 3 - 4 months now.
THE HAIRY STUFF ON THE ROCKS
Thanks in advance for any help.