Overflow drain question

[ibefishy]

I just picked up a 100g tank with a single center overflow. The overflow has 2 holes down in the bottom of it, 1 is larger than the other 1. I am curious on what the best way to hook it up is. Does anyone have a photo showing how they hooked up their drain pipe? Is there a good way to make a silent overflow for this type of configuration? I have a 55g tank now but never had to worry about this because I just drilled the tank, I dont want to drill this one. Any ideas are certainly appreciated. I can provide a picture of the 2 holes if anybody needs to see what I am talking about.

Thanks

[James404]

One hole is the return, one is the drain. Usually people just use a durso standpipe for this. You can google it for easy instructions on how to make one.

[ibefishy]

Thanks thats what I was looking for. I remember hearing and reading about them but couldnt remember the name.