Looking for an ID for a pest which is all over my larger tank. Brown stringy algae-like stuff which likes to bind together with grains of loose sand (I have a triggerfish which kicks up quite a bit of it). The picture shows it against a filter overflow but it also likes to bunch up around nozzles and other places my scrubber doesn't easily reach.
Of course my live rock also gets it, to terrible effect - almost like it's carpeted on. I can usually brush/'turkey-baste' it away but it seems intent on coming back in no time.
Is this cyano or a variety?