What the Heck?

Someone please tell me what this is and how to get rid of it? I have a huge CUC and my parameters are pretty good.

 

That, my friend, is Cyano bacteria and must be delt with. A phosphate reactor is in order (if not already in use) and a little over feeding could be a source. Parameters are not the issue, nutrients are. You may not be doing anything really terrible it is just that some tanks create more nutrients than others. Are you employing a protein skimmer?

 

I just switched a new protein skimmer, a CPR Bak Pak 2R+ so it handles a larger load but as of right now I am seeing less skim! I also tend to overfeed....

 

your skimmer is probably still breaking in. shorten the feedings and the light cycle and give it some time

 

brush it off the coral, your cuc will likely eat i where it ends up, they tend to not walk on the branches of a gorg (?) looking for a meal, especially if you have snails. For that little amount just manually clean it.

 

good luck dont wait too long