DIY overflow ?

[buzzbait00]

Hey Guys!
Im building a 22wx2.5dx5.5in tall overflow box out of acrylic to go over two 1in drains in a 75g.I'll be useing a mag 12 for the return.The more linear overflow the thinner the water thus less noise and better surface skimming so I've read.My questions are should I cut teeth in the top of the overflow or use a"gutter gard" .How high should the overflow box go?If I cut teeth,how long?Any ideas?

Thanks,
Buzz!

 

[Tomoko Schum]

I don't know if a skinny long overflow is quieter or not. I don't hear any noise from my overflow box itself. It seems to me that the noise is more to do with drain pipes than overflow box itself. Have you looked at durso or stockman pipe designs?

Tomoko

 

[buzzbait00]

here is a link to the design im useing

here is a link to the design im useing

I have decided not to cut teeth i've read that it cuts doun on surface skimming.http://www.captivereefing.com/showthread.php?t=973

 

[Tomoko Schum]

The top of the overflow box should be where you want the water surface to be. The top of the teethless overflow box needs to be right at the water surface to skim properly.

Tomoko