How to figure out your bulkhead?

[michika]

How would I go about figuring what size bulkhead I need for a new system? Anyone have a link or anything for calculating which size I need?

[Static]

http://www.reefcentral.com/calc/drain.php

Show's what size pipe to use for your overflow. If you want to be super safe, then use 2 bulkheads for redundancy, or at least go a bit bigger than the minimum size recommended.

[michika]

Originally Posted by Static

http://www.reefcentral.com/calc/drain.php

Show's what size pipe to use for your overflow. If you want to be super safe, then use 2 bulkheads for redundancy, or at least go a bit bigger than the minimum size recommended.

You are my hero! I spent an hour trying to google this with no luck!

So...
Using the following input parameters

Gallons per Hour = 2500
Drain and Overflow sizes are calculated as

Recommended minimum drain pipe diameter = 2.06 inches
Recommended minimum linear overflow size = 38 inches

So....what does linear overflow size mean?

[mr_alberta]

I think it means that if you had a square and all 4 sides were 2" long, the linear length would be 2"x4 sides = 8"

[Static]

yeah, linear overflow would be the sum of all the sides of your overflow box (the part with the teeth in it). This can be cheated a bit but you will have a faster and noisier flow into your overflow box.

[michika]

Originally Posted by Static

yeah, linear overflow would be the sum of all the sides of your overflow box (the part with the teeth in it). This can be cheated a bit but you will have a faster and noisier flow into your overflow box.

Oh....I think I may have found a flaw in my design...

I want to do an external overflow box, and I didn't really want to to make it a full 1ft tall only like a half sized box. Originally I planned to run two drains in the overflow. Am I going to run into difficulties?