MH Bulb For Lumatek 750W HPS Ballast

I got some Lumatek 750W HPS Ballast, They are HPS only ballast I was wondering is there any MH type of bulb I could run on these ballast maybe some kind of conversion bulb? The reason I ask I want to use these ballast for veg. Thank for any help

bump

what about a dual spectrum

Im looking for something I can use for vegg with on my hps lumatek ballast

ok well why not use ur HPs for veg. iv herd a few ppl have done this with great/sometimes better results. up to you