Fan leaves twisting and pointing inward

[Ironbud420]

Growing in a greenhouse with a oil heater until they can stay outside for the summer
Growing in sunshine mix #4
Using holland secret grow-bloom-micro - following their grow schedule
auto flower-feminized seeds
About 4.5 weeks old

out of 12 plants only happening on 2, every plant on same fertilizer schedule, watered when needed in between feedings

Any suggestions on what this could be or what’s happening? And how should I approach it? Thanks for all the wisdom in advance

 

[Username85]

Wow that’s wild, what kind of temps/RH is there with and without the heater?
I haven’t seen anything like that, interested to hear what people think

 

[MikeMuffler]

Was it exposed to large amounts of gamma rays? Make it angry and it might bulk up.

I often have one or two of the same clones unexpectedly pass away for no reason. I usually just cull and carry on. Maybe check the roots?

 

[hotrodharley]

Too much light. They’ll likely start yellowing next.

 

[Ironbud420]

Wow that’s wild, what kind of temps/RH is there with and without the heater?
I haven’t seen anything like that, interested to hear what people think

RH in the day is average 35%, then at night when we close up the greenhouse it gets up to 60-75% untill we open it back up bright and early temps at night get to 15 and in the day get to 28-34, getting hotter in day and night as the summer approaches

Too much light. They’ll likely start yellowing next.

they have been growing via natural sun light with no light pollution from the garage or house at night, plants look very healthy, very green just the fan leaves look mutated, and bent backwards, top leaves grow out straight then after a while they curl in.

also mention PH of nutrients is 6.5 as well as runoff

 

[hotrodharley]

RH in the day is average 35%, then at night when we close up the greenhouse it gets up to 60-75% untill we open it back up bright and early temps at night get to 15 and in the day get to 28-34, getting hotter in day and night as the summer approaches

they have been growing via natural sun light with no light pollution from the garage or house at night, plants look very healthy, very green just the fan leaves look mutated, and bent backwards, top leaves grow out straight then after a while they curl in.

also mention PH of nutrients is 6.5 as well as runoff

Well that leaves overwatering.

 

[Ironbud420]

Well that leaves overwatering.

soil has good drainage, nothing left soggy in the bottom of the pots, don’t think overwatering, usually do a lift test before-watering anything, thanks for the feedback though I’ll keep an eye on the watering schedule for these two rogue plants

 

[PopAndSonGrows]

Do you have fans pointing at it or is the plant getting an unusually high amount of breeze in the center?

 

[hotrodharley]

soil has good drainage, nothing left soggy in the bottom of the pots, don’t think overwatering, usually do a lift test before-watering anything, thanks for the feedback though I’ll keep an eye on the watering schedule for these two rogue plants

Well sounds like you have everything exactly right. Good luck.

 

[Ironbud420]

Well sounds like you have everything exactly right. Good luck.

Thanks bud

 

[Username85]

RH in the day is average 35%, then at night when we close up the greenhouse it gets up to 60-75% untill we open it back up bright and early temps at night get to 15 and in the day get to 28-34, getting hotter in day and night as the summer approaches

they have been growing via natural sun light with no light pollution from the garage or house at night, plants look very healthy, very green just the fan leaves look mutated, and bent backwards, top leaves grow out straight then after a while they curl in.

also mention PH of nutrients is 6.5 as well as runoff

That seems like a pretty big swing between temps & RH in a day, but I have no idea if this would be a result of that

 

[VincenzioVonHook]

could be broad mites, but the plant looks healthy otherwise. I have seen a plant with broad mites that did the same twisting of leaves and downwards hugging of the stem. It was almost identical. Its hard to spot at first as they generally live "in" your plant.

 

[Hollatchaboy]

I,m thinking they are seeking reflective light from walls

I believe they're outdoor.

 

[hillbill]

Mistook reinforced plastic for Mylar at first look.

 

[Treesomewanted77]

Growing in a greenhouse with a oil heater until they can stay outside for the summer
Growing in sunshine mix #4
Using holland secret grow-bloom-micro - following their grow schedule
auto flower-feminized seeds
About 4.5 weeks old

out of 12 plants only happening on 2, every plant on same fertilizer schedule, watered when needed in between feedings

Any suggestions on what this could be or what’s happening? And how should I approach it? Thanks for all the wisdom in advance

Sunshine mix #4 is a peat mix so what PH are you using. 5.8 is the sweet spot. I use the advanced mix#4 with great results fed daily to runoff. I believe the medium your using needs to be treated like coco if your not already. Not sure why only 2 plants are showing this issue hopefully you can get it figured out

 

[Ironbud420]

Sunshine mix #4 is a peat mix so what PH are you using. 5.8 is the sweet spot. I use the advanced mix#4 with great results fed daily to runoff. I believe the medium your using needs to be treated like coco if your not already. Not sure why only 2 plants are showing this issue hopefully you can get it figured out

PH is at about 6.5 in the reservoir and run off is very similar, I’ll shoot for 5.8 or 6, how you reckon I should lower PH, living out the in country so any ‘house hold’ acid's work? Vinager? Citric acid? Thanks for the help

 

[Treesomewanted77]

PH is at about 6.5 in the reservoir and run off is very similar, I’ll shoot for 5.8 or 6, how you reckon I should lower PH, living out the in country so any ‘house hold’ acid's work? Vinager? Citric acid? Thanks for the help

I did a google search and it said lemon juice works to lower ph. I’m sure there is plenty more household items that work but you would have to do a search to find them. I run my ph at 5.6-5.8 for veg and up it to 6.0-6.2 for flower. I don’t think 6.5 would cause too much of an issue but I may be wrong. I would lower very slowly don’t make big drops in the first watering only lower it .1 at a time till you get it down to around 6.0-6.2 that should be good

 

[Ironbud420]

I did a google search and it said lemon juice works to lower ph. I’m sure there is plenty more household items that work but you would have to do a search to find them. I run my ph at 5.6-5.8 for veg and up it to 6.0-6.2 for flower. I don’t think 6.5 would cause too much of an issue but I may be wrong. I would lower very slowly don’t make big drops in the first watering only lower it .1 at a time till you get it down to around 6.0-6.2 that should be good

Thanks buddy, yeah I googled but sometimes the forums provide the better of the options. I’ll start lowering to 5.6 slowly, then back to 6 slowly for flower see if that helps, Thanks for input!