How High Should Grow Lights Be Above Seedlings?

Grow lights should be kept fairly close to seedlings, but not too close or they will burn the delicate young seedlings. The optimal spectrum for seedling growth is one rich in blue wavelengths, which promote strong, compact growth.For LED grow lights, start with the lights about 2-2.5 feet (60-75 cm) above...

Can An LED Grow Light Be Too Bright For Indoor Seedlings?

Can an LED grow light be too bright for indoor seedlings? It depends on the wattage. Most grow lights like 100 watts or 200 watts can be used for seedlings.