Breakthrough alert
Based on your fts pics from other thread
You can do a drain and treat technique you don't have to take it apart. House the fish and cleaner shrimp elsewhere, drain all water down and hit the spots. You don't attack it all at once you do many drain and treats accessing the spots each time
We aren't getting out of work here in any way but it can be swapped to different work, draining and replacing the water a few times. A drained tank means you can access each spot in the air, but still in the tank. a brute trash can from wal mart will hold your water, and you can use the old or change some out for fresh when inputting.
We must attack that algae in the air first. After searching online around the various forums or formal articles regarding this algae to see how others beat it consider this drain and treat, I do this in my aquarium. The exact way to speed up the fix is to use slightly higher pct peroxide over the typical 3% but we can work with just 3% too if needed.
** I was not intending to make this a peroxide thread if anyone can beat rhodophyta groups using nutrients so he doesn't have to do the dance I'm reco then post alt threads
Consider using algal turf scrubbing renato they claim an ATS can cure any invasion in 100% of tanks every time. Before doing that mode, find an ATS user who beat your kind of algae with it and link it here as you research so we can see
I'm linking your thread here so others can see the great pics and pose another idea
http://reef2reef.com/threads/what-kind-of-algae-is-this.216532/#post-2491541
The key before we begin on your tank renato is for anyone to post any link where invasive red algae was beaten so we can review those options for your tank
The right place for nutrient controls in battling gha or any other algae is never as a reaction. as a proaction
and then if you get algae, you don't redo the water table you fix the algae and stay course.
all the retroactive nutrient chasing advised is whats stripping these tanks of coral from po4 overdoing and whats leaving algae in place for months after re adjustment where it will never go away for the 40%.