greenteam Posted March 14, 2018 Share Posted March 14, 2018 Hello Iam growing in a 1m x 1m Tent with 400hps bathroom extractor fan and a desktop fan in the tent. temps are average of 30 degrees they have been in veg for about 3 weeks. I had 6 plants, two are doing well, but the rest are not growing and leaves are crispy and falling off with brown spots. I thought it was heat stress but could it be a calcium deficiency? Please see pictures attached Thank you for your help in advance. Quote Link to comment Share on other sites More sharing options...
Justin Hemp Posted March 15, 2018 Share Posted March 15, 2018 What medium are you growing in? And what are you feeding? Do you PH your feeds or water? Sent from my ALE-L02 using Tapatalk Quote Link to comment Share on other sites More sharing options...
greenteam Posted March 15, 2018 Author Share Posted March 15, 2018 I am growing in coco with perlite. my ph levels are 6 - 6.5 I fed them once with abit of nutes "BIO BIZZ" but thought they might be to young so have stopped. I have started putting cal-mag in the water now. Quote Link to comment Share on other sites More sharing options...
Justin Hemp Posted March 15, 2018 Share Posted March 15, 2018 Coco should be fed at a lower PH, I think around 5.5 is what you looking at. Did you buffer your Coco before use? Sent from my ALE-L02 using Tapatalk Edit: There is also no nutes in Coco, I would presume you will need to feed a small ppm and increasing it from there. Added to that I may give them a good flush. Do we know if the genetics are the same? Quote Link to comment Share on other sites More sharing options...
Jimmy-z Posted March 15, 2018 Share Posted March 15, 2018 I'm thinking light/nutrient burn. I would say, get a cheap EC meter so you know how much you're feeding them & raise the light a bit. I started with a PPM of around 400 & then upped it to 800-900 based on the advice of another forumite. My plants have been super happy since then... JH420 does know a lot more about growing indoors than I do. 6.5 PH is a bit off. I aim for between 5.5 & 6 Sent from my SM-N950F using Tapatalk Quote Link to comment Share on other sites More sharing options...
420SA Posted March 15, 2018 Share Posted March 15, 2018 Definitely lower that PH to between 5.5 and 6 as Jimmy said, can see a lockout going on there. Bit of mag def and N def 1 Quote Link to comment Share on other sites More sharing options...
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