HemiSync
Autopot& Autocob Enthusiast
- Joined
- Nov 22, 2015
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- www.autoflower.net
- Currently Smoking
- Sweet Seeds Dark Devil, Barney’s Farm LSD. Yummy!
On my current grow I initially put too many COBS too close to the canopy and the leaves never taco’d nor drew away from the lights but rather they prayed to the light and then started showing deficiencies rapidly in the cal/mag and manganese. I had 4 of the AutoCobs (220 Watts) at 24 inches away from an older plant and it was just too much. I raised the lights back up to 32 inches, turned two of them off, and upped the calmag in he reservoir. They were back to normal almost as fast as they were having issues. At no point did they show toxicity claw or overwatering drooping. Here are some pics of what was happening. https://www.autoflower.org/threads/...ht-stress-in-action.65376/page-3#post-1838267Thanks for chiming in slow... I just finished a bit of work on them (cleaning up some garbage leaves and opening things up and a bit of tucking. Also snipped off some sites that were at the very lowest points and in tight against the base of the plants) backed off the base nutes a bit as well with the new jug I mixed and gave them a light watering.
Now, something crossed my mind as well and maybe @BigSm0 can give some input on this... about 2 weeks ago I decided to position the plants much closer together kind of in a triangle since none of the growth had extended beyond the pot. My thinking there was if I pack them in tighter, I can bring the lights closer together and get the most amount of light possible out of the three autocobs. With the overlapping footprint of them from being so close together. I’m starting to think that it may have been too much light?? What do you all think? I’ve now spaced them evenly across my 2x4 with one autocob above each as opposed to a triangle formation that had each Autocob within a foot or so of each other. Also I noticed when I had them bunched closer together the sides that were now closer to the walls of the tent had weaker growth since that formation was essentially 2 wide and 1 between the two. I am fairly confident that going forward things are going to be much much better. Looking forward to progress and hopefully a decent stretch this week. Think I might just raise the lights 3 inches before I close the book on them tonight
Within 2 weeks I had all four of the lights back on, but still at 32 inches. 3 weeks later and all looks wonderful again and the lights are still at 32 inches.

So I guess what I’m trying to say, but have smoked way too much tonight, is that light placement is important with COBs but I don’t think they are what caused your current issues. I know and I think @BigSm0 would agree, we still have a lot to learn about the best way to utilize cobs to their full potential.