Need help with sizing pvc for returns and overflows

[oldpaddy]

Hi guys, I've got a 180gal tank from GlassCages on the way and am trying to figure out the size pvc I'm going to need. Schedule 40 1" return and 1.5" overflow. So a 3/4" Schedule 40 tube should fit the 1" bulkhead and a 1.25" tube should fit the 1.5" bulkhead, right?

 

[TriggerFinger]

Hi guys, I've got a 180gal tank from GlassCages on the way and am trying to figure out the size pvc I'm going to need. Schedule 40 1" return and 1.5" overflow. So a 3/4" Schedule 40 tube should fit the 1" bulkhead and a 1.25" tube should fit the 1.5" bulkhead, right?

It should be 1.5” drains and 1” returns. The holes drilled in the glass are slightly larger to accommodate the bulkheads but the size of the bulkhead is the same size pvc you get.

 

[oldpaddy]

It should be 1.5” drains and 1” returns. The holes drilled in the glass are slightly larger to accommodate the bulkheads but the size of the bulkhead is the same size pvc you get.

So a 1" pvc pipe will fit straight into a 1" bulkhead from inside the overflow box? Then I can glue in a 1" pipe to the bottom of the bulkhead?

It's been a while since I messed with aquarium plumbing. It's a peninsula style tank and I think I'm going to do the pump to returns with schedule 40 pvc. Plus valves and unions. My old tank was all flexible tubing and I didn't like the look of it. Though I'll probably do the overflows with valves and flexible tubing going into the sump.

 

[Jon's Reef]

Here is the chart from BRS with hole size and pipe size:

How To Select and Properly Install Aquarium Bulkheads

Bulkheads allow you to transfer water from one side of an aquarium to the other and allow for traditional PVC plumbing to be connected. In most aquariums, bulkheads are used for drain and return pipes on your display tank but can be used for many other things too. Some tanks come pre-drilled for...

www.bulkreefsupply.com

 

[TriggerFinger]

So a 1" pvc pipe will fit straight into a 1" bulkhead from inside the overflow box? Then I can glue in a 1" pipe to the bottom of the bulkhead?

It's been a while since I messed with aquarium plumbing. It's a peninsula style tank and I think I'm going to do the pump to returns with schedule 40 pvc. Plus valves and unions. My old tank was all flexible tubing and I didn't like the look of it. Though I'll probably do the overflows with valves and flexible tubing going into the sump.

Yes, the bulkhead size and the pvc size are the same.
If you have any doubts, Glass Cages would be able to confirm for you.