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.