BigHornBuds
Well-Known Member
Every 7-10 days I run a little extra water thought and test the run off , very easy to tell if they are using everything, or your getting build up.What ppm had you been feeding at before that?
700 ppm is not that high (it's not that low either) in a root zone, you have to keep in consideration that you flushed with RO so it's gonna pull every last salt out of your root zone.
I haven't flushed plants in so long, dial in your feedings and you'll start to notice you don't need to flush. As flushing is done to remove excess salts. I haven't gone above 1.4 EC in many runs and plants are never deficient.