250w bulb in a 400w ballast?

7th1der

7th1der

Well-Known Member
What will happen if I put a 250w HPS bulb in a 400w HPS digital ballast?

Will it cause a fire?

Is the ballast way too strong for that sissy bulb? and will it blow it?

Or will it be fine and I have nothing to worry about? cause this 400w bulb is kickin some heat.

Thanks in advance!
 
ripz

ripz

New Member
yes it melted and bubbled up like blown glass. i never give advice unless i'm sure of what i'm saying.
 
DontKnowBeans

DontKnowBeans

Well-Known Member
Yeah, you can't do that unless your ballast is designed for bulbs of different wattages. You need an air cooled reflector. If cost is an issue there are instructions for DIY on this site.
 
DontKnowBeans

DontKnowBeans

Well-Known Member
lol, I should have looked at his sig. He already has a DIY Cool Tube. Okay, even though it's a digital ballast it's going to give off some heat so it should be outside the grow room. You might need a more powerful fan too.
 
7th1der

7th1der

Well-Known Member
DontKnowBeans said:
Yeah, you can't do that unless your ballast is designed for bulbs of different wattages. You need an air cooled reflector. If cost is an issue there are instructions for DIY on this site.
Click to expand...

I made a DIY yourself cool tube and hook'd up a 4" duct fan inside my cab and It get pretty hot in matter of minutes. Imma make some ventilation holes and add a PC fan and see what happens.
 
7th1der

7th1der

Well-Known Member
DontKnowBeans said:
lol, I should have looked at his sig. He already has a DIY Cool Tube. Okay, even though it's a digital ballast it's going to give off some heat so it should be outside the grow room. You might need a more powerful fan too.
Click to expand...
I was thinking the same thing. I'm running my temperature test now tests now. lol
 
dgafaboutanyone

dgafaboutanyone

Well-Known Member
oh ... i dont think you weanan do that you should alwasy have eveyting correct
if your ganan grow in your home! so you dont kill your self!!!
>_< just trying 2 keep it safe good luck tho!
 
ripz

ripz

New Member
i tried it it ran fine for about 2 weeks then i went in one day light was off and melted into a big bubble
dont do it m8 your risking your safety
 
7th1der

7th1der

Well-Known Member
ripz said:
i tried it it ran fine for about 2 weeks then i went in one day light was off and melted into a big bubble
dont do it m8 your risking your safety
Click to expand...

I'm clearly not gonna do it! Just was wondering because the temps from the 400w bulb was very hot. Changed the ventilation of the cool tube and it is fine now! Thanx to all of you that replied to this thread!
 
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