Grey colour and twisting on 3x central top sugar leaves

[greentomatoes2025]

Hi all,

Almost through week 6 of Flower and have noticed a slight grey colour and twisting on 3x central top sugar leaves. Probably nothing too serious but just wondering if anyone can shed some light..

Pics don't really emphasise the colour unfortunately.

70%/30% Coco/Perlite soil
Full spec LED: 20" above tops
- 35 DLI
- 720 ppfd
Fertigating 1.25L daily with 10% RO
- Cal/Mag
- Silica
- CannaGrow&Bloom
- other generic brand supplements

Thanks

 

[HerbalEdu]

either beggining of mold (try pull on the leaves if it break and come easily from the grey coloration that could be it), either nothing of concern.

hard to be 100% sure from the photos.

 

[Illbill]

Looks like a little bit of heat/light stress. Leaves are starting to taco.

 

[greentomatoes2025]

either beggining of mold (try pull on the leaves if it break and come easily from the grey coloration that could be it), either nothing of concern.

hard to be 100% sure from the photos.

Thanks very much, I'll give that a go and keep a close eye on it.. hopefully the latter. Humidity has been on the higher end about half the time..(about 70%) the other half I can keep about 55%..

 

[greentomatoes2025]

Looks like a little bit of heat/light stress. Leaves are starting to taco.

Let's hope so.. thanks for your insight.. I had turned things up a bit lately so fingers crossed. Glad to hear you have suggested other symptoms to suggest so