leaves curling upwards!?!?!?!?!

hi there can anyone please help me...ive just stated growing and my grennhouse greenomatics are 15 days old from seed so i think preflowering....but today ive noticed some of the fan leaves are curling upwards at the edges....what causes this and whats the best way of curing it will it damage the plants i hope not...any help would be great

What are your temps? Leaf edges curling upwards can be a sign of heat stress, but we'd need a lot more info about your setup to give you a more solid diagnosis.

gcvt420 said:

What are your temps? Leaf edges curling upwards can be a sign of heat stress, but we'd need a lot more info about your setup to give you a more solid diagnosis.

Click to expand...

thanks for getting back to me dude im running a 400w hps in a 1.1m x 0.65m x 1.60m tent extraction on 24/7 circulation fan on same... temps are around 85F and humidity is 47% on the bottom of the tent .....ive just started misting with a weak bat guano foliar feed aswell

hope this helps?

Sounds like you've definitely got a heat problem. If your temps are 85°F near the floor, they are going to be even higher near the tops of your plants. Mid 70's would be ideal. Running a 400w in a small space like that is okay, but you may need better ventilation. How many CFM are you moving with your current exhaust fan?

gcvt420 said:

Sounds like you've definitely got a heat problem. If your temps are 85°F near the floor, they are going to be even higher near the tops of your plants. Mid 70's would be ideal. Running a 400w in a small space like that is okay, but you may need better ventilation. How many CFM are you moving with your current exhaust fan?

Click to expand...

im running 187 M3/F ive raised the lights a bit and that seems to have sorted the heat issue but im not sure how long that will cure it for and if it will have a noticeable affect on the plants

slowergrower said:

im running 187 M3/F ive raised the lights a bit and that seems to have sorted the heat issue but im not sure how long that will cure it for and if it will have a noticeable affect on the plants

Click to expand...

dude u need pics? it could be ur plants are praying for mag? or heat. need pics to see if its a nute def

need pics to make sure its not a nute issue.

Cru3l said:

need pics to make sure its not a nute issue.

Click to expand...

hi guys these pics are they best i could get im afraid....how would i have a nute issue if im only misting the tops of the plants with a weak solution of bat guano and feeding them just water? and the soil im using is supposed to have enough nutes for the first six weeks of growth?

Looks like heat stress. Also I would just stick with the nutes in the soil for now, looks well fed.

What makes you think the plants need foliar feeding? Is your exaust fan cooling your light?

voodoofx said:

What makes you think the plants need foliar feeding? Is your exaust fan cooling your light?

Click to expand...

i just thought misting them would boost flowering as well as adding moisture to the air? and no the fan isnt cooling the light

just a little update guys i spent all afternoon in the tent and basically i raised the light to the top of the tent about a metre away from the top of the plants installed another circulation fan its blowing at the same level as the light to cool it down and then placed my other circulation fan just above the top of the plants they are both running all the time...im just misting with plain water now and ive managed to get the temp down to 76.9 F and the temp at 58% with the help of a tray of iced water in the bottom of the tent.....should this help to stabilize the plants now