1st autoflower grow

Added a bestva value tier 100 watt led this week because I read that putting more light is one of the best ways to make better buds. It does add some heat and not as bright as vipar spectra but I think I'll keep it. I did notice brown spots on the edges of leaves and then more yellowing and brown spots and initially thought it was from misting them with lights still on but I don't know now so could use suggestions. I was going to run straight ph'd tap water next watering unless it's a deficiency.