coco run off ph

dundzik

Active Member
Hi. I am having problems with my plants in coco. Leaves are dying off, showing mag deficiency. I was adding calmag, but problem did not go away. I have checked run off ph and it was 6.4 and even 6.6 on some plants. Yesterday i have flushed them with nutrient solution at 5.7 until run off was 5.7-5.8. After 12 hours I have watered tgem again at 5.7 just to collect and check some run off. It was 6.4-6.5 again. I am using canna pro coir and canna nutes plus calmag and ro water. I have made nutes solution in the morning and ph of it was stable. Ph meter is calibrated. Any help welcome.
 

Aeroknow

Well-Known Member
Pics would help.

Growing in coco, I'm always at 1.6-1.7EC during peak flower. With every single strain I grow. And ph my nutrient solution to 6.0
image.jpg

Water with nutrients EVERYTIME until roughly 20% run-off is achieved, and you'll usually be golden. Check run-off ppm/EC to help lead the way. Don't bother with the ph runoff. It will drive you mad!
Since your starting with RO water, I suggest adding 3ml/gal of calmag to the RO water first, then add base to be where you wanna be;-)
 
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