Leaves curling up

Does anyone have any idea what could be causing this. I think lt might be from having my cobs down to close. My ppm has dropped from 650 to 600. Ph went from 5.5 to 5.9. Temp stays between 70 and 82. Water temp is 66 they have been in system for about two weeks.

You'd have to upload a picture I can try to give you a better guess. Are the outter edges curling up, is it folding itself in half kind of, are the tips curling upwards? How are your fans? Do you get a nice breeze across them every so often to keep them cooled off?

Got a pic posted. Had power saving on and phone wouldn't upload a pic with it.lol

Fan blows above them atm. Will lower it in the morning

Yea looks like some serious heat stress, you may want to get another fan in there or direct it more towards the plant just make sure its not sitting on the plant. Oscillating fan. How is the humidity in your room? You may want to find a way to bring some fresh air into the room. Plants can handle higher temps with added c02 I believe

Nevermind humidity shouldnt be an issue youre in DWC. I may be wrong all together ive never done DWC but it definitely looks like heat to me. My plants show it at around 80 degrees sometimes, the light is more direct on certain plants also not sure if its just one on a few leaves or what but maybe try moving it away from that area with another maybe it can handle that intensity

Humidity runs from 40-60. Just a 18 inch oscillating fan. Also have a 6 inch active air inline fan on a charcoal filter exausting outside and 6 inch intake from an airconditioned room. I think my mistake was having my light to close. It was only about 4 inches from the leaf in the pic. Have raised it to 12.

becksman said:

Humidity runs from 40-60. Just a 18 inch oscillating fan. Also have a 6 inch active air inline fan on a charcoal filter exausting outside and 6 inch intake from an airconditioned room. I think my mistake was having my light to close. It was only about 4 inches from the leaf in the pic. Have raised it to 12.

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Cool deal, post pics if it improves. I love seeing happy ladies haha. Your leaves are looking healthy otherwise goodluck.