[ChiWing]

yeah, looks like cyano and a little green hair algae as well. canister's are notorious for getting nasty and causing high nitrates, could be fueling the algae issue.

 

[ChiWing]

Number one thing would be to use RODI water. Not using pure water is probably the biggest factor fueling your algae. I'd also drop the canisters. What size is the tank (edit: never mind - you already told us that ) and how much flow do you have?

 

[ChiWing]

I have a pretty good amount of flow. I could also get another powerhead if that would help.. i just don't want tooo much flow because of my recent purchases... (colt coral, pom pom xenia, giant duncan)

How much is a "pretty good amount"? I thought the same thing, then I had my cyano outbreak and upped the flow rate - helped a lot.

 

[ChiWing]

Okay, so ditch the 2 canisters and just go with a protein skimmer? Then get an RO unit? Recommendations for both would be helpful. Best value/quality ratio.

http://spectrapure.com/Refurbished-90-GPD-RODI-System - this is the unit I have. Pretty popular and reliable unit.