so I planted my seeds! How long until they pop out od da soil? Also, is 24" away from the pots enough to avoid light burn if im using a 400hps lignt?
No such thing unless you have drops of water on your leaves and put them under really strong light(e,g. +1kw HID or The Sun) which leads to magnifying effect etc. and what you're referring to is heat stress/burn. I put mine under 400w MH and they're usually ~30cm away from the bulb.