Burgandy colored algae with air bubbles?

[us~^>shark]

My 135g tank is about 6 months old and everything is doing well including 7 fish, 1 anemone, 1 coral, 1 flame scallop and a clean-up crew. About 2 weeks ago, I notice a dark burgandy color slimey algae on the back glass with what appears to be air bubbles in it. It doesn't look like normal green, bubble algae. It has now appeared on one piece of LR as well now. I've tried to clean it off the glass, but it basically disintigrates and floats around the tank and the air bubbles just disappear like normal bubbles. I'm afraid that it may spread, but I'm not even sure what it is.
Anyone have any ideas on what it is and how to control it?
Thanks.

 

[bang guy]

Cyanobacter. Usually it's a sign of too many dissolved nutrients and/or low waterflow.

 

[us~^>shark]

Hmmm... I use RO/DI water and change 10% weekly. I have 2 600GPH pumps that circulate water through an underground pipe system so there are no dead spots in the tank, along with 2 300 GPH power heads at each end, about mid way up the tank, and finally an 800 GPH pump that circulates water from the wet/dry unit back to the tank. In addition, there is a 300 GPH pump that operates the protein skimmer and a 300 GPH pump that circulates water from the wet/dry through the chiller and back to the wet/dry.
I'm not sure if all of them count regarding water flow, but I thought I already have so many pumps running that I can't imagine adding another. but if I need more circulation in the tank, I guess I can add more.
Is there any other way that there would be too many disolved nutrients?
Thanks.

 

[bigarn]

Are you overfeeding? You can also try increasing the clean up crew.

 

[us~^>shark]

I didn't think I was overfeeding, but maybe I am. I give them a fairly small amount (2 pinches) of sinking morsel fish food twice a day (morning and evening). And I give them a small amount of brine shrimp every couple of days for a treat. I feed the anemone a small (pinky tip size) piece of fresh shrimp about 2 times per week. I will cut back a little to see if that helps.
Thanks for the feedback.

 

[bang guy]

Test your Phosphate level. That is a very good indicator of dissolved nutrient levels. Do you rinse your Brine shrimp before feeding them?
There's nothing wrong with siphoning out Cyanobacter.