Do you have a sealed air-cooled hood? Get one if you have the cash. A Cool Tube will run about a c-note. Growing at 85 isn't exactly cause to panic, but believe me when I say that your plants will probably be happier at around 75-80.
Keep your light far from the seedling until it has grown it's first set of true leafs.YOu don't need to add any nutrients yet,just plain ol water is fine.Don't overwater,and get an oscillating fan on them.