It went down when all the plants were in 1 prop. Since I have 2 I decided to split them up to give the roots more room. I think the ones in the larger tub got a little burned because I took 7 plants from that container. Not enough plants to feed at that level.

Thanks for the posts guys. The vent stays cool so no fire will spring up. You can't see it but there is a fixture inside the hood and it is lined with aluminum then the mylar on top of that. Thanks for the advice gents

Cheers