If you use a dalight MH it works good for flowering from what I have read, but I have never heard of a 750 watt bulb, as far as I know they come in 70w, 100w, 175w, 250w, 400w, 600w, 1000w.

call 888-990-9933 (buylighting.com)if you are in the US, they claim to carry ballasts for all wattages of MH from 50 to 1500, their business hours are 8:00am-4:30pm US central time (gmt -6 hours)
lordsoth666 Reviewed by lordsoth666 on . 750w metal halide fixture ok, so recently a friend of mine took me to his grandpa's warehouse and gave me a new GE 750watt metal halide/multi vapor lamp bulb to be precise and i've been having the hardest time finding a fixture for it...does anyone know where i can find one?? any usefull responses are appreciated. Rating: 5