I look on the old threads about exposure units but I could not find anything on a 400 Watt Metal Halide Bulb, so forgive me for starting, yet another exposure unit question thread.
I found a 400 Watt Metal Halide Bulb at Home Depot last night and I was wondering if anyone has ever used one of these bulbs before. If so, does it really work better than blacklight exposure tables and where do I find the right fixture and ballast for the bulb. It's a pretty big bulb...for street lights.
Further to the other info I sent, if they don't sell it with the transformer, then it might be too much trouble as well as too small. Loco posted a website for larger lamps with transformers in calif. What about hydroponic shops, or do they have them down south? That's where we get em up here in Cannabisada. C$240 with transformer ready to plug in the wall, ( less than US$200).
Check with the city works yard, they might have some old units kicking around, used for floodlights but they aren't energy efficient anymore, so are being replaced.