UVA is useless to plants, if you want to supplement your normal lighting with UV light use a UVB bulb, it causes the plant to produce more THC. http://www.hempfood.com/IHA/iha01201.html
lordsoth666 Reviewed by lordsoth666 on . NEW WITH UV LIGHTS AIGHT I JUSS GOT THIS TODAY A 100WATT UVABULB AND I WAS WONDERING WAT KINDA OF SET UP DO I NEED AND WAT KINDA OF SCHEDULE SHOULD IT HAVE. Rating: 5