I saw this post yesterday and looked at the build thread, and today saw your current tank. I’m a little shocked at the pictures and what you are doing? Could be wrong, but I don’t see any corals. What are you trying to accomplish, a FOWLR? At six months, in a similar sized tank I had ~25 coral. It is time to get going and give algae some competition for real estate, otherwise nothing you are doing matters much for fish only.
Also skimmer should be on regardless, they are not as effective as people think.