Proper installation of Bulkhead fittings?

[n2b8u]

I purchased a 30 Gallon tank, stand, overflow box,wet/dry filter, skimmer, heater, mag7 pump(broken) VHO light 2 blue 2 white for the grand total of 75.00. This will be my first ssaltwater tank. A former employee of the LFS owned it and had mushrooms and a huge piece of coral growing on the side(before he scrapped if off.)
The tank had a ton of silt in the sand plus worms running everywhere. I decided to tank it apart to clean and scrape the tank. When I did I saw a piece of glass siliconed to the bottom corner underneath there were 2 holes drilled. So I ordered 2 bulkhead fittings.

The longwinded question here is how Do I correctly install them. Silicone after they are in, teflon tape threads, nothing?
https://plus.google.com/u/0/photos/104871473888434759242/albums/5778961582595443345

 

[fort384]

You just have to screw the bulkhead fittings in. No silicon is required. They should be tight, but not over torqued.

 

[mfdrookie516]

Every bulkhead I've used had a gasket with it. Just be sure to put the threads out of the tank unless the directions specifically say otherwise (like glass-holes). If you tighten too tight, you'll crack the glass... speaking from experience there.