A 250W HPS bulb, if it has a fan blowing right on it and the incoming air is cool or airconditioned, you can hold the HPS bulb in your hands.

Cool air IN, hot air OUT, add a fan blowing right on the bulb and you can hold a 600W HPS in your hands.

I havent tried this with the 1,000Watter and wouldn't but yes, you can do this if your air exchange is proper...NO PROBLEMS.

You dont wanna grow with floros beyond the sprout / clone / early veg stage.

And you never wanna mess with halogens. Might as well try and grow them with a flashlight or BIC lighter.
HARDDON Reviewed by HARDDON on . Question for those w/ HPS experience I recently came accross an old bread locker (Subway was throwing it out) and figured it would make a great flowering box for no more than a couple plants. I'm trying to figure out what type of light I should buy... The locker has a floor area of about 18x25" and is 55" tall. I was thinking of going for a 250w HPS mini-system, the type with an enclosed ballast. I'm wondering though, about heat becoming an issue in that small a space (although I will have fans for flow-through ventilation). Rating: 5