TankHankerous
Well-Known Member
I'm growing 2 Chem '91 x Chem D plants in 5 gal pots of promix hp. LED light set to provide about 700 ppfd at the highest part of the canopy, and water around 5.8 ph. I'm using tap water with less than 100 ppm so supplementing with calmag until it hits 200ppm and then I add maxigrow/maxibloom nutrients until my total feed ppms are around 700. Aside from red stems which I think is a phosphorous or magnesium deficiency the plant looks OK so far but hungry.
My question has to do with runoff ppm and the fact that it always comes out a few hundred points higher than my input water. Also my input ph of waterings are about 5.8 but runoff ph is around 6.1
I've been giving half the recommended dosage for maxigrow during veg so maybe that's the reason they look a little yellowish green. If I mix their recommended dose it's over 1000 ppm and I don't want to burn the plants chasing yield.
My understanding is that there is salt built up in the promix and I have to flush with a nutrient solution but maybe I ought to just feed higher ppms... I'm also apprehensive to keep adding nitrogen during flower because of some things I've read.
Thanks for any help, tips, tricks, advice, and or jokes
***Pics are from Day 10 since flip to 12/12
My question has to do with runoff ppm and the fact that it always comes out a few hundred points higher than my input water. Also my input ph of waterings are about 5.8 but runoff ph is around 6.1
I've been giving half the recommended dosage for maxigrow during veg so maybe that's the reason they look a little yellowish green. If I mix their recommended dose it's over 1000 ppm and I don't want to burn the plants chasing yield.
My understanding is that there is salt built up in the promix and I have to flush with a nutrient solution but maybe I ought to just feed higher ppms... I'm also apprehensive to keep adding nitrogen during flower because of some things I've read.
Thanks for any help, tips, tricks, advice, and or jokes
***Pics are from Day 10 since flip to 12/12
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