O oryansreef Member Market Messages 103 Reaction score 0 Jun 29, 2016 #1 I have an apex, with orp probe. my orp runs 450-500, everyone I see posted with an orp reading its in the 300's. is mine to high? and why?
I have an apex, with orp probe. my orp runs 450-500, everyone I see posted with an orp reading its in the 300's. is mine to high? and why?
