G GreauxFast Active Member Mar 28, 2022 #1 How far should I have my 400 watt set at 150 watts from three week seedlings?
Wattzzup Well-Known Member Mar 28, 2022 #2 3 weeks shouldn’t be a seedling turn your watts up to max power.
calvin.m16 Well-Known Member Mar 31, 2022 #3 100% power, keep the bulb 2 feet from the top of plants.