D.A.A.S.69 , they certainly have!! An just won a soilstech 315 + bulb for 140 bucks , now I can set my lights up how I want. Gonna put the 630 in the tent to veg an flower the Scrog , wonder if I c I uld unscrew one of the 630 bulbs for veg an screw it back in for flower?? Prolly not.. should flower the hell out of a 3x3 tent