I almost forgot a question I had:
I bought a new bulb today because I heard a lot of people were using these on here. Its a GE Outdoor lucalox 35 High Pressure Sodium with 2250 lumens. It says on the box: Do not use in incandescent light bulb sockets. For use with s76 ballast only.

Is this true? Or can I just replace my plant light with this and be safe?

Thanks in advance,
Jeff

Here are some more pictures too.
1. Picture of the box of the bulb
2. a peek into my box
3. the scrubber being built (more of a bitch than I expected)