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I've seen you use pool shock @0.1g./gallon. You use at every watering?

And run peroxide , start to finish. 10ml/gallon (14%), once established.

Thanks Splinter7, flushed tonight at 5.5 , drained and added nutes at 5.7. See what tomorrow brings. 4th hempy run: 3 no problems , but 4th has been a headache since adding PowerSi silicate. My first and last time using it. Been using KISS method, but had to jump on the silica wagon. live and...

Thanks. Looking fine, no excess or deficiencies. Runoff ppm 450-468. I'll keep ph 5.5-5.7 and ride without chasing pH runoff. Thanks again

2nd week of flower and runoff pH 6.7. Input is 5.7, using Jacks 321 @ 460ppm and Mad Farmer get down to lower pH. I had no pH swing greater than 0.5 until I added Power Si in late veg. Then pH rose to 7.2 with lockout of P. Flushed with water at pH 5.5 until runoff was the same. Plants growing...