Overflow stand pipe system for sw

[Chasnkevin4ever]

I was looking on craigslist and came across a sw tank that said it has been drilled for silent overflow stand pipe system, can anyone tell me what that means?

[Rutrag]

The tank will have at least one hole drilled in the bottom that should be outfitted with a bulkhead fitting. Typically this will be behind kind of a dam which water flows over. In the hole will be a pipe that water actually flows into to keep it from making an incredibly loud gurgling sound. Below the tank would be plumbed to a sump.

Most of the time there's a second hole which would be for the return. It would have (again generally) a smaller diameter pipe that goes up and over the dam.

This genes rally makes for a clean looking installation which could be right against the wall or in the wall.

[Chasnkevin4ever]

Can I use this tank for brackish or freshwater? Would I have to set the tank up using the overflow thing or could I set it up like a normal tank?

[Rutrag]

You would probably need to just get bulkheads (if they're not already in there) and plug them with PVC caps if you won't be using a sump.