[jdgmommy31103]

Hi, I'm new here, and I'm not sure I am posting this in the right spot...
OK, so my husband decided to be cheap and since he is a welder, he made his own hood for the lights. After almost 2 years, it's falling apart, and rust is falling into the water. All of our coral, the exception of 2, have died. All that we have left is 1 clown, 2 saltwater cats, a clam, and 2 featherdusters. All of our shrimps and crabs are dead too.
Could this be caused by rust? My husband doesn't think so, but I do- and everything else in the tank is testing fine.

[WILLIAM1]

that's a good possibilty I know you should not use metal in the tank.

[rlcline76]

I'm guessing that a new light fixture and a hefty water change is in store for you. The sooner the better.

[graveyardworm]

I'm guessing more than just a bit of rust has fallen in the tank. Rust is basically just iron which many people dose to their tanks. A few small bits of rust most likely wouldnt cause much more than an algae bloom. How was the metal treated, was it galvanized, painted, something else?

[Taras1]

Depending on the composition of the brazing sticks, flux, base metals, etc., it sounds like there's a major contamination problem. Remember, the solution to polution is dilution!!! (and a new light fixture) LOL