Triton Biscotto Lime

it can have to due with stress also higher light the pat also may not drain proper for leaves curling but should check light height more darkness helps

transfer back to 16/8, would that be better?

Could be heat stress - 30 degrees is very hot for cannabis. It could also be caused by nutrient deficiency - 0.6 EC is very low. Your humidity is also very low for what is still effectively the veg stage. Its probably a combination of all of these.

I dont think it is TMV. There would be isolated patches from the beginning as far as I know. Also think twice if you want to flush here. It could be do more harm then good. 😰

Really hard to tell what caused this deficiency. Easiest way to fix it is by flushing the soil with 2 times the pot volume in water with the right pH and EC. Let the soil dry for 2-3 days and after this you can continue watering like you are used to. You are almost done so this one time flush should help till harvest.

potassium deficient? ph swings can cause different rates of growth that result in a curved leaf, too. eliminate possibilities. i've read it's not even certain tmv can affect pot plants? do you smoke? that may increase risk if you handle plants afterward, if it is possible.