need help with setting up this Acrylic overflow

[sean A.]

Can someone please let me know which hole is the overflow & which is
the return. Also what is the hole on the side of the return for?

Http://i805.photobucket.com/albums/yy337/caplayr/utf-8Bb3ZlcmZsb3cuanBn.jpg

[danorth]

Know what, post this in the lights, filtration, equipment section.

[sean A.]

Thanks. I figured it out now.

[danorth]

Well, pass it on, I'm curious.

[saltyguy51]

big hole is for siphon tube, small hole for return and hole in the overflow if for your return nozzles back into the tank

[sean A.]

I went on youtube & found a vid of someone installing it.