looking for MH info

[oneshot]

I got the HPS system but need a MH bulb for a two light system.anyone know what balast a 175 watts HM bulb..I think a 150watt HPS and a 175watt MH would be more then plenty..anyone with idea of size needed for ballast/
oneshot

 

[pcduck]

the ballasts must match the bulb.. 150 watt bulb needs 150 ballast. some conversion bulbs may different, ie: 400 mh ballast uses a 360 watt hps conversion bulb