Jiddy said:
The pictures listed below is the DIY canopy and lights i got from "guy" used. ... . Now none of the bulbs work. ... PS this never happend in my FW tank
After looking at the pictures you posted, and seeing the fixture, my advice to you is to scrap the entire thing and start over. You may be able to salvage some parts if you care to construce a new fixture.
I hate to recommend this, as it's drastic, but from what I can tell, the ballasts and fans were mounted on the underside of the fixture and exposed to the salt splash you can't help but get from a SW tank.
This will destroy the ballasts and fans in time, if it has not already done so. Fans and ballasts should be mounted so that they are either protected from the splash or mounted remote to the fixture. A trick some people use is to mount ballasts on the top of the fixture, and optionally, put some wood trim around them to hide them.
It also looks like the inside of the fixture was never painted or othewise finished. It is tough to tell from the light, but it looks like the wood is water stained, and has salt all over it.
At this point, I'd say you are looking at 4 old bulbs that need to be replaced, and one, possibly two, ballasts that need replacement. Replaceing the parts is not going to resolve the design problem of allowing salt water to come in contact with the ballasts and fans.
I'd either rebuild the fixture, with a better design, or buy a whole new fixture. If you are going to rebuild, you do have one advantage. You can use the salvaged parts, and replace them as necessary. However, if you have to replace a lot of them, it will cost more than just getting a new fixture.