Fast Buds - Indoor grow 3

Your not suppose to giz on them dude

Yo growmie, those yellow-brown spots with the leaf edges curling up look like early nutrient burn or a potassium deficiency, possibly made worse by a bit of heat or light stress. Since you're in Plagron Lightmix and feeding Bio Nova, it might be a bit hot for week 2 veg. That Mars Hydro FC3000 runs strong, and at 28°C, the girls could be feeling it. Try cutting nutes to about ¾ strength, raise or dim the light a bit if they’re still small, and make sure your watering is slow and even,big pots dry unevenly at this stage. If you can, check runoff pH and EC to catch any salt buildup. Damaged leaves won’t heal, but if new growth looks clean, you’re good. 👊👍

Looks like the start of a nutrient issue or early deficiency, those yellowish-brown edge spots and upward leaf curl can point to potassium deficiency or early-stage nutrient burn. Since you’re in Plagron Lightmix (a light soil), the plant might be starting to demand more than what’s available around week 3. Also, the mix may be a bit hot combined with your Bio Nova feeding. I'd check runoff pH and EC just to be sure, could be minor lockout or overfeeding. Try easing up on nutes a bit and see if it stabilizes.