I was forced to dismantle my grow room the other day, (long story, don't ask), when I noticed something.
Last year I purchased a Lumatek 400w digi ballast, bulb and shade and didn't notice that they had supplied me with a 600W Grolux lamp.
Both lamp and ballast have been functioning together for about 6 months now without any adverse effects.
Can I carry on regardless or should I buy a 400W bulb?
Does anybody know if the bulb will damage the ballast long term?
Is this a really inefficient electricity use?
Any advise would be most welcome.
TLK
Full Version: 600W Bulb in a 400W Ballast.
ah, digi ballasts are a different ball game, they should be designed to not put out more than a specified amount of current so should cope better, although the ballast will be working it's nuts off, so get the right lamp in there
many thanks. 
This is a "lo-fi" version of our main content. To view the full version with more information, formatting and images, please click here.