Yeah! Somewhere along the line we caused the nitrogen/phosphate to get out of balance I'm planning to keep both nutrients high until I get a balance elevated levels and will slowly water change it out while adding in more clean-up crew to tackle algae growth. I'd much rather have green than brown lol. You can always give chemeclean or high flow a shot. It may help prevent the Cyano. Do you have it everywhere or a few spots?I experienced something similar. Mine was caused from removing the fish and quarantining them for 90 days when I was given a “quarantined” fish that had ick from my LFS.
In that time period I wasn’t adding anything to create the ammonia the bacteria feed on and thus my bacteria biome depleted.
When reintroducing my fish and adding coral this cycle began. First diatoms, then hair algae then dinos. I did the raise nutrients and let other things out compete, and then I now I’ve been battling cyano for some time.
I’m about to try this plan after I looked into the whole biome cycle theory. It seems like it will aid the long term success of the tank without constant maintenance and battling.
Firstly I knocked out the lights, this helped a lot as these nuisance bacteria and algae’s are photosynthetic. The next steps I have planned, are to and ocean direct sand over my sand bed all around the tank, and add copepods.
I plan on keeping the lights out for quite some time so as to not allow something else to take over while the bacteria and pods start to do their work.
I read through your start to now, and I pretty much have had the same path since reintroducing everything back to the tank. I’m convinced it’s to do with the biome in our tanks. Definitely look into it and let me know what you think.