actually I have decided to order a controller from a different place

HANNA BL 7916 pH Controller + Dosing Pump, BL7916

this unit is much better,uses a pump instead of a solinoid valve, it has proportional dosing,slows down as it approaches your set Ph value. so it doesn't over dose.

when everything is correct in veg. the Ph should be on a constant rise
needing Phed down. during flower with the right reciepe it can be held constant but usually it drops due to the high Phosphorus levels, and needs uped.

still trying to figure why everyone says(including me)that the proper Ph level is around 5.8, when all of the lititure I can find says 6.0 is correct to keep ALL of the Ca and Mg available.
I have at times had spots that made me thing it was a Mg diff. so I'm moving up to 6.0 and will keep you all posted on my findings.
Daddynobucks Reviewed by Daddynobucks on . PH UP PH DOWN SOLUTION Hello all I Have to order PH up/down solution online and just wondering if anyone has any sugestions of brands to use, or not use, concentrate or not, powder or liquid. everything will be in a single bubbler. any help would be greatly appreciated THANKS Rating: 5