Your precision and accuracy are impressive.

I do not understand why you are running with no CYA which basically wipes out your sanitizer on a daily basis. I'm not sure I understand the need for an algaecide other than polyquat (which you could do without if you'd use chlorine and stabilizer).

I am equally puzzled by your purposeful low pH and Alk. Again, it's quite obvious you have managed your water carefully but I don't understand the numbers you have targeted.