You probably can't see it but theirs about 3/4 inch seedling started and I was wondering what height to hang my light above it(I'm using the mars hydro ts 600). And yes I know the other two little plants pathetic.
The frame is 20×30 and it is 45 inches tall.It is not airtight at all and all it is,is mylar stapled to a wooden frame.How well will this hold heat and humidity?
How long am I supposed to wait until I switch it to LEDs or something more powerful? Because I don't want to start them out with something that will burn them.