When it comes to difference between MH and HPS for flowering, from what I have read/understand at least, It would be worthwhile to get the conversion bulb.
rygo796 Reviewed by rygo796 on . flowering with mh vs hps how much less would u yield flowering with a mh rather than a hps? Just wondering because i have a mh but only want to spring for a hps if i have to. If I can get decent results with a mh then I will just use that. Rating: 5