need advice

Im running a 300w Apollo led light. Roughly 18 inches from plant. Temps stays 83-85 with lights on, 18/6. doesnt get below 80 with the lights off. bottom row of fan leaves are starting to turn yellow and wilt a little. Soil is bone meal, blood meal, mushroom compost, black cow, perlite, lime. Got the soil mix from a super soil recipe. Only issue was finding the bat guano and azomite. Trainwreck feminized seeds. Two plants but only one is showing issues. Ive read its a nitrogen deficiency. If so, how do I fix this? Just redue the soil? Add some blood meal? im in early veg stage. Freakin out here.

They look ok to me if the soil is good you won't get any deficiencies for a while yet, although that soil does look very cloggy like not to great for drainage meaning no air to the roots (overwatering) can make them go yellowy sometimes, them 2 leaves u speak if they were the 1st leaves to appear from the seed (embryonic leaves) I think there supposed to fall off not too sure about that thoe I use cuttings usually

Dont spray your plants! You are asking for mold . Your temps are way to hot, your plant is showing signs of heat stress. veg 65-75f. I think we tend to mimick a tropical enviro but its not nessessary. Keep it cool and dry (no more the 40% humidity) and you'll have happy colorful plants

We dont spray them. Sloppy watering before picture. Ill take a note to that. Im worried about dropping the temp that much. Everything I read said trainwreck needs lower to mid 80s. We've raised the light and im go I to add some more perlite to the soil. Hopefully raising the light fixes the heat stress issue. If not, ill drop the temp. Ill post another pic here in a couple days. Thanks for the look out people

Yea, babies are sensitive to temps and light intensity.