Che Paddy
Well-Known Member
im no expert mate dont know much about autos myself but some research ive done advises the light to be as close as possible without burning them otherwise the plant will stretch and get limp but by stretching apparently dont produce anymore bud.
Im with xBladeX. i grew autos under a 250w in a cool tube and had them about 2 inches from the glass. Next ones I did I had the bulb slightly further away to see did it make a difference and they grew much taller with less bud. Rule of thumb usually is if you can hold the back of your hand underneath it comfortably its ok for the kids