400w HPS is 90cm away. I was told to place it 40cm away on here 2 weeks ago and that fried 5 Greenhouse Cheese sprouts overnight. 1 survived.
Water twice per day, them cubes get dry, its 90 in my tent and thats with a fan blowing in and the side opened up in the day times.
Its been done before with the 400HPS many people tell me.
24hr light? thats what im running at the mo.
Ive now put them in their home and watered the rockwool, not the cube. Im guessing the roots will search for the water right?
One drooped the other day, I put a plastic cup over it and a few hours later it was ok. Recon I should stick them in the propagator under the light?
Never grew from seed.