Little brown spots on Afghan Kush leaves

Been growing 14 days Afghan kush seed growing in miracle grow that feeds up to six months with a water ph at about 6.5, had a 120w light on it just switched down to a 75w have a fan moving and blowing on it, started seeing liitle brown spots on some leaves any help i would appreciate it. Also would it be to early to switch it to flowering light cycle?

Hey dude, not sure why no replies, but definitely NO fertilizers while your seedlings are still establishing themselves. Dilute your fertilizers way down if you have to. But generally you should be able to go a few weeks without any nutrients. Fertilizers and nutrients are given after a few weeks with a low doseage. You can flip to 12/12 after 2 weeks. just dont expect a large plant. grow it out. larger plant means larger yield. As a guideline, i veg for 4-6 weeks. sometimes 8 if i don't see rapid growth.

Your soil composition is out of wack. I am soil challenged so I grow hydro. But if I have learned anything about my many soil failures. It is this 1) skip miracle soil or any moisture control and or slow release nutrient soils they are just trouble good for roses or tomatoes maybe.

But not pot. 2) optimal light distance is key to dense and close inter nodal spacing from your photo your seedling is way reaching for that light. I'll add a picture of my 12 day old seedling so you can see the difference of placing your LEDs close. 3) if your plant starts off rough it hard but sometimes its better and faster to drop new beans. The new been will probably pass the older in growth speed and your yield will be greater if you start healthy from the atart. My two cents.. Here's the pick on my 12 day seedling.