Ok, so since making the switch back to MH/T5, I now have this:
Should I be overly concerned? my PO4 is reading about.03 according to my Hanna ULR.. It's really just on the left and right glass panels.
Should I be overly concerned? my PO4 is reading about.03 according to my Hanna ULR.. It's really just on the left and right glass panels.


