so i started flowering 2 weeks ago. and im using a 400w mh a 70 w hps and 3 42 w cfl in a 3'x3' room. is this ok
Yeah, you can get a 400w HPS 'conversion' bulb that will work with your MH ballast (about $50 if it's in your budget). GL!
ok so the 400 w is a fixture i got from a store and the fixture says. hps,mh and it came with a 400 w mh bulb. dos that meen i con go out and get a 400w hps and itl work in the ballast?
ok but just to make sure a digital ballast dosnt have an lcd or anything like that dos it. cus the one a have is just a huge 40 lb ballast with a soket atached for the bulb
If it's 40 lbs. it probably not a digital ballast lol! Is there a switch somewhere on it that you can select mh or hps? Any info on the label?
I don't know what the 'hg' means but it sounds like your ballast can drive both an mh or an hps bulb. Then you wouldn't have to buy a $50 'conversion' hps bulb but could use a regular hps bulb which you can find for $15-20 if you look around.
OK, I get the 'hg'. That's the symbol for mercury so I guess your ballast can drive mercury vapor bulbs but you wouldn't want to use those for growing anyway. GL!