How much light is necessary for growing mushrooms indoors?

Magic mushrooms require indirect sunlight daily to develop mature fruiting bodies. However, in the evening, the mushrooms must spend time in darkness, too, so you’ll want to shield them from any artificial light at night. If you choose to only run artificial grow lights, then a daylight fluorescent tube, emitting in the 6000–7000 kelvin range for roughly 12 hours, is ideal.