Ok couple more details.
I have my own RO/DI with dual TDS Meters (incoming is 14ppm, output is 0ppm). I don't have any hair algae on my sandbed, and I grow Cheato in my tiny refugium and have Halimeda growing in the corner of my tank. I am also running carbon in the filter (Chemi-pure Elite), also I run my skimmer "wet". I would love to put a lawnmower blenny in my tank because I think they are cool, but my tank is too small for one.