turns out i faught through the pain..... dkh dropped to 10.4 from 11.2 so im guessing this means roughly a .8 dkh consumption per day. now the foundation B says 1ml /100 L will rise dkh by 0.1. this means im suppose to be dosing roughly 30 ml a day? ( i have an estimaited 400 factual water volume so.... 4ml/400l will rise it by 0.1 so 4x 8 = 32ml?) seems like a huge amount to be adding daily...and this stuff isnt cheap either.... on a different note it seems my rocks havent given out all the p04 yet, most are coverd in nasty looking algae and i have some cyano spots here and there. po4 readings at 0.03 and no3 at 0.