Great pics and beautiful corals.
Fyi on vinegar...........that spike in PO4 you had is part of the process and normal with vinegar dosing. Once you've been dosing for 5-6 months it will get out of whack if you don't reduce your dosing. Even the old vodka directions say to cut dosing in half when levels zero out. I think that's where a lot of people quit and say vinegar dosing doesn't work without knowing what's going on with the bacteria. I went through the same thing............never lost any acros or colors and my PO4 was up over .50. Once I reduced my dosing the PO4 went down. I'm now dosing 8mls a day on a 90g system. The highest I got was 30 ml a day.
The other important factor is to just use only that. Don't use algae scrubbers, GFO, pellets, ect. in conjunction. It won't work and it's impossible to control and know what's going on. A skimmer and water changes is all that's needed. Passive carbon in a bag is fine for water clarity.
