Is it true u can put a 400 watt Mh bulb in a HPS ballast i have a hps ballast and if this is true im gunna get on that
It is true you can put a MH lamp in a HPS ballast (but not visa versa) However, be aware that the MH lamp will only run at about 70-80% of its potential lumen output. Not really enough to bitch about for the veg cycle, so go for it! Hope this helps. Peace.
No it just might shorten the life of your ballast overall though. No fire hazards or anything though....
definatly,,,use the conversion ,,,bulb or you risk ruining your system,, i too have a 400 hps,,, the sunmaster conv. bulb is what i use,,,,go to,,,,discount hydro.com ,,,,,they have a excellent selection of bulbs,,,,,,hope it helps,,,,,,later.....