quick ? what size bulkhead

lotsoftats · 02/04/2008, 03:20 PM

I was given a 29 reefready tank for free it has a small leak in the bottom. I know how to fix that but this tank is drilled with 2 holes one hole is 1 1/2" and the other is 2" what size bulkhead do I need for them?

which hole is the drain and which is the return?

thanks,
mike

woz9683 · 02/04/2008, 03:39 PM

You'll have to look at a specific brand of bulkhead to figure out what to use in those holes. Each brand has different wall thicknesses, so the makers often recommend different hole sizes for the same size pipe. (Example: for 1" pipe, 1 maker might recommend a 1.5" hole and another might recommend a 1 5/8" hole.) You're best bet is to find the brand of bulkhead that is closest to the hole sizes already drilled in your tank.

Generally, the larger hole is the drain hole.

Jefe12234 · 02/04/2008, 03:42 PM

Well the drain is always the larger of the two holes. Your 1.5" hole is for a standard 3/4" bulkhead. That will be the return. Your 2" hole is a little odd. Are you sure it's 2? Usually you would have a 1" bulkhead for the drain, which requires a 1.75" hole. 2" is a little bigger than necessary, but not big enough for the next size bulkhead.

Here are some bulkheads and their required hole sizes.

http://www.marinedepot.com/ps_Aquari...strainers.html

lotsoftats · 02/04/2008, 03:57 PM

Quote:

Originally posted by Jefe12234
Well the drain is always the larger of the two holes. Your 1.5" hole is for a standard 3/4" bulkhead. That will be the return. Your 2" hole is a little odd. Are you sure it's 2? Usually you would have a 1" bulkhead for the drain, which requires a 1.75" hole. 2" is a little bigger than necessary, but not big enough for the next size bulkhead.

Here are some bulkheads and their required hole sizes.

http://www.marinedepot.com/ps_Aquari...strainers.html

I really need to learn how to read a tape measure...DUH it's 1 3/4" so I need a 3/4" and a 1" bulkhead.

thanks guys for the help. evidentally I need alot since I can't read.

02/04/2008, 03:20 PM	#1
lotsoftats Registered Member Join Date: Jan 2007 Location: 40356 Posts: 1,147	quick ? what size bulkhead I was given a 29 reefready tank for free it has a small leak in the bottom. I know how to fix that but this tank is drilled with 2 holes one hole is 1 1/2" and the other is 2" what size bulkhead do I need for them? which hole is the drain and which is the return? thanks, mike __________________ Current Tanks: 40 breeder with 40 breeder sump/fuge

02/04/2008, 03:39 PM	#2
woz9683 Registered Member Join Date: Sep 2005 Location: Jackson, MS Posts: 1,029	You'll have to look at a specific brand of bulkhead to figure out what to use in those holes. Each brand has different wall thicknesses, so the makers often recommend different hole sizes for the same size pipe. (Example: for 1" pipe, 1 maker might recommend a 1.5" hole and another might recommend a 1 5/8" hole.) You're best bet is to find the brand of bulkhead that is closest to the hole sizes already drilled in your tank. Generally, the larger hole is the drain hole. __________________ Michael Current Tank Info: 195G (125G Display, 70G Sump)

02/04/2008, 03:42 PM	#3
Jefe12234 Registered Member Join Date: Apr 2001 Location: MN Posts: 885	Well the drain is always the larger of the two holes. Your 1.5" hole is for a standard 3/4" bulkhead. That will be the return. Your 2" hole is a little odd. Are you sure it's 2? Usually you would have a 1" bulkhead for the drain, which requires a 1.75" hole. 2" is a little bigger than necessary, but not big enough for the next size bulkhead. Here are some bulkheads and their required hole sizes. http://www.marinedepot.com/ps_Aquari...strainers.html __________________ Serenity now!!!