taco leaves- getting worse

Does anyone know what can cause upper leaves to taco upward ? Can it be over watering?

Hello, to start I am a complete noob. I am 6 weeks and 3 days in but the new growth look shiny and have a weird glaze and the new leaves are curling in a look jagged. I give them mills A B start and vitalise on the mills schedule I had a mite problem in week 3/4 but I have since got rid of...

I have 8 clones in solo cups with coco and 2 of the clones have this taco going on. I’m using 1 60 watt autocob about 3 feet above the plants. Using RO water and cropsalt veg nutrients ph 5.8 ... could this maybe be from the coco drying out too much between waterings?

Hi guys been a while since I've been on here but need some help with my room. Setup is 4x600 watt hps (rooms 3mx4m) Planted in Canna Terra professional mix Vented lights Vented room Lights around 70 cm from plants Room temp 26-30 degrees ( depending on how hot it is outside but mostly...