Ride, they are 85 watt bulbs. Powerful yes, but 250 no. They are as bright as a 250 watt incandescent bulb but use only 85 watts since they are more efficient. They are not however as efficient as HID lights like a high pressure sodium.

Timmy, do yourself a favor and get a High pressure sodium light. With some basic wiring you can make the ballast switchable so you can run a Metal Halide bulb as well for veg.

If things get hot buy/build a cooltube

Get an HID light and you will not be sorry