Hey Bev (AKA MOM number 2 ) lol its Michael with a A
PE I can't believe that you dont know what it stand for with all these short Abbrev's for words . Polyop Extension!!!!!!!
Ya Since I have been in Reefing I have never tested for Magnesium.....
Last night on RC i was reading about it in SPS forum that this guys PE went crazy from upping his Magnesium...