Just drill it so it is a bit tight and has a bit of friction.
It should be about 3"-4" long and just push it in until the noise stops.
If it restricts the water too much pull it up a bit.
Just make sure to cut the top of the tupe off at the max water height in case it plugs up. To see what happens when it plugs up just test it by putting your finger on top.

He must be psychic.

ahah guess so... or a stalker

Can I be both :biggrin:

I think I can go with a Herbie style drain. Just to recap, I have a 2 3/4" hole (1 1/2" bulkhead) for my main drain and 2 - 1 3/4" holes (1 " bulkheads) holes that we to be used for return pumps. All holes are on the bottom of the tank. I tested a 1" drain and it can keep up with 2 Quietone pumps being pumped directly (no elbows, no plumbing joints) into the overflow. I would like to use the 1 1/2" for the main drain and one of the 1" for an emergency drain, leaving a 1" for the return.

Now my questions,
1. Can a 1 1/2" bulkhead be used for a drain for a Herbie style drain?
2. Does anyone have a link to a reference site with drawings that I can follow to install this?
3. Can someone with Solidworks draw a picture with measurements and directions that I can follow?

Thanks again everyone for all your help.

Hose did not work?

If you need pics of a herbie check out my build thread. The first couple pages are of the plumbing part of my build. http://www.canreef.com/vbulletin/showthread.php?t=40669 . If you need any other pics let me know by pm and I will send them to you.

Doug

http://i84.photobucket.com/albums/k3.../trimetric.jpg

http://i84.photobucket.com/albums/k3...frontnoted.jpg

This is a general drawing that should hopefully give you the idea. First you can use a 1.5" drain and a 1" drain. I would advise using the 1" drain as the primary and the 1.5" as the secondary (back-up). If you want you can use a standpipe with the secondary line, most people don't but it will keep things quieter if it gets used. You can use any type of standpipe, doesn't have to be an HGB as shown.

The siphon tube is not required but will prevent the overflow from draining when the power is cut.

The one thing I wouldn't do is tee both drains together at the bottom, keep them separate.

Let me know if you need something more specific than already posted. The files are at work, I can post something early next week if needed.