Up to about a week ago most everything was cool (some yellow between the veins). Then twisted, cuping up leaves started appearing everywhere. Here's my system 8 plant DWC using General Hydro nutrients under LED lights. Air temp between 80 to 85, water chiller set to 66. I added a small amount of micro the other day to see if that would help. Started flowering about 3 weeks ago. Can't see any problems with the roots, not mushy or off color. There could be a little light burn, but nothing severe. Ph has been kept within 5.5 to 6.5 parameters. About half, maybe more, are showing these symptoms. The others seem in the very early stages of whatever this is. It really looks like they are dying or something with the leaves all drying out.
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If I had to guess, I would say heat and light stress are a big factor. How close is the light to the plant? Can you bring canopy temps bellow 80? How much air flow is going on around the tent? -
You're not supposed to smoke them until after you harvest! It looks to me like they're getting way too much heat and/or light.Comment
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Check under those bud tops...…...Smoke Ganja create Peace Respect Nature don't trash the Planet
Soil grower with coco/perlite mixed in
indoor/outdoor grower
1 36"x36"x66" tent- Viparspectra P2500
1 3x3x6 tent- used in late spring for seedlings both veggies & weed. I have 2 viparspectar 450r for that tent.
I use a t-5 & 54watt CFL for seedlings
Sometimes i use plastic sometimes i use fabric grow containers
Currently using fish/guano during veg growth & FF Grow Big 6-4-4 teens to bloom. Once i see pre-flower i switch to
Age Old Organics Bloom 5-10-5
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DeadlyNedly I believe i saw hermis from stressSmoke Ganja create Peace Respect Nature don't trash the Planet
Soil grower with coco/perlite mixed in
indoor/outdoor grower
1 36"x36"x66" tent- Viparspectra P2500
1 3x3x6 tent- used in late spring for seedlings both veggies & weed. I have 2 viparspectar 450r for that tent.
I use a t-5 & 54watt CFL for seedlings
Sometimes i use plastic sometimes i use fabric grow containers
Currently using fish/guano during veg growth & FF Grow Big 6-4-4 teens to bloom. Once i see pre-flower i switch to
Age Old Organics Bloom 5-10-5Comment
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If they haven't showed any male signs yet, and I don't see any, they probably will soon, so yeah, keep an eye out.Comment
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UPDATE: Well that crop all turned yellow except at the very top of the bud. I wasn't going to try to save it (didn't know if smoking it would be toxic), so I thru everything out and started over. I germinated the seeds and planted in rapid grow units. After seedlings came up they started to turn yellow. I can't figure out what is causing it. I started some seeds in jiffy pellets and the same thing is happening on them. Please help. At this point I am still using tap water.Comment
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Which lights are those?Comment
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I am using LED's I have 4 at 2000 and 2 at 1500 (watts). I found out that my pH meter was off. I think the problem is high pH. I got a new meter and found out the tap water is about 7.1. Probably so high the leaves are turning yellow. That's probably the problem from my last crop too. I also got a lux meter. With all this help maybe I'll turn this black thumb green. lolComment
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OH and FunkyButtLovin no offence taken, just lookin for help.Comment
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I Kinda think if you put a few cfls or a t-5 over your seedlings you might see a big difference. I don't think a ph. of 7 is high enough to kill your plants. Just my opinion. Oh yeah, test your meter in a cup of milk,should be around 7.Comment
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Well I’d say a 1500 watt led would be enough for 4... ive never tried 8.. ceilings not high enough.. but to have that much you are for sure over killing it with lights.. you could have 20+ for the amount of light power your using.. and those types of lights are not for seedlings... should have a much softer light or have it really high away.. when they get their first set of true leaves you can move it down to 18 inches away.. but never closer.. 18 is still the closest recommended is 18-24inchs away, your temps in the room should be around 65-75/80 depending on strain you have
depending on which soil or hydro your using should have a separate temperature.. water is 55-70 I believe.. dirt is 65-70(dirt retains heat and will actually slowly cook roots if to hot.. to damp will cause diseaseComment
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