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Thanks. I can research it now that I have an idea of what it is. I've been searching but could never find any pics that looked like it.

Thanks. Do I need to get rid of it? It's pretty neat looking.

It has been growing pretty quick. If I need to get rid of it, what is the best way. It is the green in the center of the picture. Thanks in advance.

Thanks for the help everyone. 1guy, I'll try the powerheads like you have yours and see how that works.

The tank is about a year old. The cyanobacteria is what prompted me to add decent powerheads and get more flow.

Here's a pic.

I'm going to order a 550 and see what that does. Then order what I think will work best with the 550. At least I will know what kind of flow to expect from the others based on how the 550 flows. Thanks for the help.

I can't get a picture right now. I have about 45 lbs of live rock.

I was planning on removing the powerhead I have in there now. It is an Aquaclear 50. So the only existing flow would be from the mag5 return from the sump. Basically, I will be starting from scratch. I could use my Aquaclear 50 for surface agitation in addition to a 750. Or buy 2 new powerheads...

I've got a 36 gal bowfront with a 20 gal sump with a mag5 return. I want to add 2 Koralia powerheads to replace the cheap powerhead I have now. Which Koralia powerheads should I get? Would 2 Koralia Evolution 750's be too much? Would I be better off with 2 Koralia 425's or maybe 1 of each?

OK. Thanks.

Thanks for the quick reply. Do I need to get rid of them?

Is this aiptasia. I have a few and they are about 1/2" in diameter. It is the thing in the center of the picture.   Thanks.  

Hi. I'm new to the forum. Is this aiptasia? Thanks.