hi all. i want to re build my flower room but this time im usuing the 600 watt hps but im worried about light burn and heat so what would you all reccomend for the size ... im building the room in the basement and its 6ft high width is the whole house

i've got a 600 watt aircooled reflector running in a drobe 4'wide x 3'deep x 8' height and get good light coverage anymore space and i'd think about getting a light rail for even growth.

get a two meter linear rail. It will give you more coverage and allow your light closer to the canopy.

You won't need an air cooled hood in a cellar, you need that heat from the bulb to help keep the humidity lower.

I've been running 2 x 600w in an 8 x 4 tent for a while now, so have got used to the 16sft per light. Good area for a scrog.