ttu 420 paul Active Member Apr 11, 2008 #1 pH Minus from Wal-Mart? Made as a pH downer for pools but ive read that it is ok for plants. Is this true? 92% Sodium Bisulfate
pH Minus from Wal-Mart? Made as a pH downer for pools but ive read that it is ok for plants. Is this true? 92% Sodium Bisulfate