Upside Down Leaves

Every now and then I'll have a leaf spin around upside down on me. Last night I did a res change and this morning each plant has an upside down leaf. Btw, my lights are on evenings, off daytime so the lights have been on all night since the res change.

Is it reacting to a pH difference or....? I did increase the nutrients but only from 800ppm to 880.

I may have lowered the light a bit too since they are stretching some but it's plenty cool in there, not over 80.

I know this is probably nothing critical but if anyone has seen this and knows what the heck causes it I'd be grateful.

Oh, another thing while I'm at it - sometimes I notice a few of the leaves curl up along the side edges. I dont mean the tip curls up, I mean the sides start to curl up. What causes that?

hello dude one of my mates blueberry grows done that he found it to be a slight humidity and temp problem its nothing bad,anyway they look very nice well done:thumbsup:

Thanks bud. It's probably heat then, it got a little warm the other night, not terrible but pushing it I suppose. My humidity is 54%. This is a South African strain so I would think it better suited for heat. Anyway, they are back to normal tonight and hopefully they won't pull any more Linda Blairs on me.
:jointsmile:

when the points along the sides of the leaf point upward its like the plant swaeting thats what Geaorge said....nothing to worrk about tho maybe light a bit to close?

Jorge***

Yes, I've read that it's either too much heat or ph issues that will make the sides curl. doco i must say I've never had a plant do that to me. Interesting you guys. Once a leaf flips like that does it eventually turn back around or does it stay that way for good?

btw doco...those look like some damn happy plants....even all turned around. :thumbsup:

Edge curling is from heat stress
Doesn't look like you have a serious problem overall though. Looking good.

Yeah but whats up with the flipping thing? That seems so odd to me....not bad odd...just weird.

Weird for sure... but the stomata are on the underside... If I had to guess, my hunch would be that flipping allows the plant to transpire much much faster and cool itself off. But this is just a totally wild and uneducated guess.

That sounds logical to me....just never seen it. Doco....do they eventually turn back around or do they stay that way for good?

i'm sure you have it written down somewhere but have you been having ph issues? I know you had the nute thing going on for awhile but I'm thinking ph in the last few days....been normal?