mystery tree

I'm a little late with starting this diary. About 4 weeks into veg. I've been having trouble keep the temps down since the start. I've added more fans and have tried some other techniques I've seen on the interwebs but it's really on helped a little. PLants don't seem to be reacting to bad but their growth is definitely slow from others I've seen. Also, I used way too much nutrients on the second week so I have already flushed them and they seem to be recovering nicely This is also my very first grow and these are random seeds I've collected over the past two years. any help from the community would be great!