im new at it to man but look at the bulb and see if somewhere on it it says "MH Conversion" cuz i have a HPS ballast and have a "MH Conversion" in it and i know thats ok....
iblodro4220 Reviewed by iblodro4220 on . hps-mh???? bought a 400w ballast and a hps bulb,for a plant that i brought inside to flower last year. now i have started a new grow so i got a mh bulb and just screwed it in. it seems to be working fine the plants are two weeks old and healty. But i have been reading through a few threads and seen people talking about hps ballasts and mh ballasts im a bit confused the guy in the shop didnt tell me what sort of ballast it was ,am i ok to keep going ???? dont know much about this stuff, anyone shed some Rating: 5