Newbie Questions..

I currently have a setup with a 400w mh for veg then 400 hps for flowering. Currently the are in 3 gal pots, after transplanting, with foxfarm ocean forest. Theyre on a 18/6 light cycle right now and have been for a couple of days. My questions are, 1, the temp at plant level is a constant 73.5f with 40% hum. then proly 69-71 in dark period. light is at most 3 ft from tops. Should i lower my light or just leave it where it is? Will my plants stretch if the light is that far with that temp? Also i got some foxfarm big bloom for flowering and would like to know how early i could use it and how much i should use and how often. Any other input, opinions, POV's, are greatly accepted. Thanks, John

Can you post any pics of your plants and setup? It will give us a better idea of what your working with.

6 plants 400w mh 18/6 forest farm OF

air cooled hood or no. I would lower light if you could.. maybe keep fan on light?

i would lower the lights but do like half a foot every couple days or so until they close enough maybe about 15 inches or so
i just put my hand at top of canopy if it dont burn my hand im happy i get my 400w pretty close with my air cooled tube

its a basic 400watt system with a reflector. Not air cooled. But it is fan cooled lol. I have a fan blowing on my plants as well as a fan blowing directly at the light. Temps have been at a steady 73.5 & 40% hum. I believe i have either nute burn or nute deficiency. Im not sure but i will post pics. Help is NEEDED lol. but since the transplant the plants have been growing beautifully and fast. Just worried about the yellowing/browning of leafs. Besides that everything seems just right. Also.....the soil that i first had was MG mixed with vermiculite and some fossilized seabird guano into the soil before i planted my germed seeds. they grew just fine until about the second week when i began to notice the leafs were turning light green than they finally turned yellow in some spot now brown and yellow. i think that the MG may have had too much nutes at the time but i just transplanted them into the foxfarm OF and was wondering if the nute burn would subside over time because of the new improved soil? Thanks.

Pics of my babies from today