runoff ph can be deceiving...most imortant what is the soil ph...do you have one of those prod type ph meters for your soil?

i would check that first...then i would maybe add cal-mag but get your soil reading before adding anything..that will point you in the direction to go:thumbsup:
stra8outtaWeed Reviewed by stra8outtaWeed on . Nitrogen def or too much light? I am trying to identify what is the problem. They are under the 600 w HPS from two days and yesterday i move the lamp 1 feet away. The lamp now is two feets away. I fed them today with half strength veg nutes pH 6.3. Curious thing is that i measure the runoff water and is 7.5-8 pH?! Temps 24-25 C day and 20-21 C night RH 50-60 %. Any ideas? Rating: 5