The Green Escape
Member
anyone use the house and garden aqua flakes and have it throw off the your ph pen i think thats whats happening to me. i have a hanna ph ppm meter and its calibrated and shows everything else right but i mixed a batch of h&g aqua flakes into a 130 gallon res and it showing the ph at 4.5 on my ph pen and 6.0 on a paper ph tester. anybody have a clue whats happening?