Hey Smokey,

Don't let water get in that ballast. Make sure you raise it off the ground at least a few inches. Put it on a block of wood or something.

Also, you need to transition slowly from CFL to 600 watt HPS or you MIGHT fry your plants.. Start with the HPS 24 inches from your plant and only have it on for 1 hour.. then leave it on an additional 2 hours every day.. this way your plants can acclimate to the light..

You will need to leave your CFLs on during this transition period...

: )