Quote Originally Posted by doco
looks like they went up - 1325 ppm right now. When I started this fresh batch Monday night it was 1250 ppm - Whats that indicate?
Hey Doco ,
W/H is right - evap. / transp. of water into air or h2o that plants have used faster than nute uptake will increse ppm . numbers . I top off my res . w/ just un p/h'd r/o water when needed and this ups my ph bk. where it belongs w/o so much up / dwn chems and it brings ppm bk down . I still havta p/h the whole res 1 -2 times a day tho because ph is still dropping here ?
I have found the higher the ppm is the more stable my ph is tho. I think it's because theres more buffers in the mix w/ higher nute concentrations .
If ppm has dropped considerably between the 7-10 lapse of res changes I give em some more nutes mixed in w/ r/o when topping off the res.
Peace
Crispi :jointsmile: