Just listened to the refugium cast and realised that macro's going sexual is a bad thing. I have had this macro in my tank for the past few months. got it in a bag of goodies from the LFS, so I'm not sure what it is.

http://i81.photobucket.com/albums/j226/marauder-m/IMG_1074.jpg

sorry about the focus... difficult to get a clean shot tonight for some reason. Maybe I should tak the hint and clean the glass.
naaaa!

Looks like caulerpa nummularia to me. I am probably wrong, but thats what it looks like.

Looks like caulerpa (grape?) to me as well...and if so it can go asexual. chaetomorpha is another good choice for macro algae, and I'm not aware of chaeto going asexual.

Looks like caulerpa nummularia to me. I am probably wrong, but thats what it looks like.
Did a search on photos for this name. I agree. Caulerpa Nummularia. I'l have to work to keep it under control, but I think I'll leave it in the tank. Will trim it every 1 to a couple of weeks.
This stuff is growing an extra centimeter each day.

definately not grape,simular looking strain but not bulbus enough, has characteristics of razar with the stem formation, but its not that ether, at this point i would assume correct thats it nummularia, althought i have seen the species both stingy looking with little to no flat top bulbs, to full mushroom looking bulbs. but it does most resemble this!
indo- fiji is the typical region so its more likely for us in oz! but where did the LFS say this bag of sorts came from?
i know we are all learning milsy, but at least put a deposit on things to give u enough time to acurately identify additions on a piece of LR, or mixed bag in future, u know me, i dont mean to get up in your face, but the tank size u are running, & this is my opinion only with no dis-respect, but uve got to be more viligent . macro is great, best left out of the display if possible, but it can easy the milk the tank & die soon afterwards! all new additions are not a bonus!