They knuckle and spear like that cause of heavy feedings, nute strength is to high, I have found that most OGs like there nutes at 1500 ppms and lower, with 1200 to 1500 ppms being the sweet spot for most OGs, also having the lights to close can cause them to do this too, hope that helps.............GM
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GrowMaster I'm still not clear about what he was referring to? ..
The pics he was referring to have been feed 1200-1300 ppm , that's with 650ppm tap water included, actual ferts are around 600-650ppm... As far as the lights, the gavitas are about 5' away from the canopy..
Although during summer I do have heat and clearance issues when I let them stretch.. My other spots I'm still rocking regular hps with vented hoods.. And intake air and exhaust..
I can't agree with u more about the Co2 making that huge difference, I'm currently running only at 6-800 ppm Co2, as it my first try..
With regular airflow, the natural Co2 levels indoor are around 400-600ppms..