caulerpa=bad if left to grow. It can all to easily get out of control. I'd rip it out; there are plenty of nice looking algae that arn't such a pest. Chaeto=really good
great, I was ganna ask that, cuse the LFS live rock tank is nothing but the stuff up top, I mean its every where, Looks like I will be buying on line for some live rock :?
Valonia can be a nuissance too..It can also be pretty but must be carefully watched..It can spread rather fast and since it relies on Nitrates and not photosynthesis (if i remember reading correctly), it can disappear rather quickly