After res change we had 5.7 ph i added5 caps of up and brought it to 6.2 it is now at 6.1 seems stable from last night to today. What dod i do differen got a nutradip tri meter for 1, didnt use any tap water, mixed nutrient to early flower on bottle, ppm says 1700 + but i think ots wrong i nee Calibration solution for ppm but thays not the main concern as the ph and temp which is 63 pumping nutrient straight thru my chiller works like a charm. I also raised my drains to half way and pointe . The laser sprayers down into the nutrient to creat major bubbles which in turn brings major DO into the nitrient