I decided for my most recent grow to copy Mr Canuck Grows from Youtube.
Autoflowers from various seed banks.
Indoor, 2x4 grow tent.
Medium: ~75% canna coco (buffered), ~25% worm castings + a bit of perlite thrown in.
Nutes: 3tbs/gallon of medium. Added 70% gaea green 4-4-4 & 30% gaea green 2-8-4
Source water: tap, ~7.1pH, <100ppm
Lighting: LED, 1x200W, 1x100W
Watering: pH’d then watered every 1.5 days
Plants sprouted between Nov. 15 & Nov. 17
Originally I was ph’ing water to 6.5-6.8 per the video directions. I was getting some spotting so someone suggested because it’s coco pH needs to be 5.5-6.0 so I started doing that 4 days ago. leaning more towards 5.5. I also started adding a cal mag solution to the water as I read that even with buffered coco cal mag deficiencies are still possible. Now I’m seeing some leaf curling on a few plants. Today I adjusted my light up to near the top of the tent in case I’m burning them. previously I had been 18-24".
I also thought it might be over-watering but I read that you can’t really over-water in coco and you should never let it dry out completely.
LST on all 4 done over the last 4 days.
At around 5 weeks I intend to top dress with 2tbs/gallon medium of 50/50 gaea green nutes + 4tbs/gallon worm castings.
Can anyone comment in these photos? Am I on the right track trying to fix this, or is there even a problem?
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