Oblivi0us
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- Nov 23, 2019
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Hi my plant is overall healthy but recently noticed the leaf tips are curling up. Is this from nutrient burn? Or start of a lockout/deficiency?
Growing in coco. Using h3ads method 6/9 micro/bloom with ro water. Ec 1.6, ppm 700-800. Watering daily till 20% runoff. In a 4x4 tent with 315cmh about 2 ft above canopy. Day time temps 72f, night time 65f. Humidity 35-45%. Have air flowing in bottom and exhaust taking air out the top. Have oscillating fan.
My guess is it’s nutrient burn and getting worse? 1 feed ago I stopped with the micro and just doing 10ml bloom since I’m nearing week 7 of flower. And adding 2.5ml GH cal-mag. To get .4 ec and 400ppm. So I’m hoping the lower ec will help them come back to normal.
I am also confused because I read a lot of forum posts saying don’t worry about run off ec in coco that it doesn’t matter... but then have read from a few articles other places saying the run off ec does matter if it’s significantly higher than the water going in and to try to keep what’s coming out 200 points within range of the inflow .( https://www.cocoforcannabis.com/managerunoffec/ ) Which my runoff ec was 3.3 and ppm 1671 which indicates salt build up if that’s the case.
Any help would be appreciated thank you
Growing in coco. Using h3ads method 6/9 micro/bloom with ro water. Ec 1.6, ppm 700-800. Watering daily till 20% runoff. In a 4x4 tent with 315cmh about 2 ft above canopy. Day time temps 72f, night time 65f. Humidity 35-45%. Have air flowing in bottom and exhaust taking air out the top. Have oscillating fan.
My guess is it’s nutrient burn and getting worse? 1 feed ago I stopped with the micro and just doing 10ml bloom since I’m nearing week 7 of flower. And adding 2.5ml GH cal-mag. To get .4 ec and 400ppm. So I’m hoping the lower ec will help them come back to normal.
I am also confused because I read a lot of forum posts saying don’t worry about run off ec in coco that it doesn’t matter... but then have read from a few articles other places saying the run off ec does matter if it’s significantly higher than the water going in and to try to keep what’s coming out 200 points within range of the inflow .( https://www.cocoforcannabis.com/managerunoffec/ ) Which my runoff ec was 3.3 and ppm 1671 which indicates salt build up if that’s the case.
Any help would be appreciated thank you