would a mercury vapour lamp work?

what do you think would a mercury vapour lamp work?

No, I don't think it would work well for growing.

but i bet it would work better than my few crappy cfl's

Think you´ll find this thread/link usefull.... So no, your crappy CFL is better if you calculate lumens per Watt!

http://www.concept420.com/marijuana_lighting.htm

Kgrow said:

what do you think would a mercury vapour lamp work?

Click to expand...

You bet. They work great.

The previous post was sarcasm. They do not work for growing. Almost no usable light for the plant and create tons of heat.