<a href=showthread.php?s=&postid=7231315#post7231315 target=_blank>Originally posted</a> by clkwrk
Do you have an orp monitor? Reason I ask is because I and other have noticed very hard drops in orp when using TMPR for waterchanges....It drops so hard it takes a week just to come back up by then its time for a WC again .......dropping it once again.