Help with plumbing please

FL_Reef · Dec 27, 2021

I have a frag tank I’m trying to get set up. It is bottom drilled with 2 holes that are
1 1/4” in diameter and sitting on plywood. What size bulkheads should I be looking at getting? Also what diameter pvc should I be looking at using?

KrisReef · Dec 27, 2021

Look at bulkhead fitting hole sizes to figure out what size holes are required for the fitting. I’m guessing 1/2 inch pipe for holes that small?

Since that is acrylic you may be able to increase the drilled size but make sure the fitting you buy actually fit in the box!

YOYOYOReefer · Dec 27, 2021

you could use those probably set up for 1 inch or 1 1/4 inch pvc , looks like you have room to drill them out a bit and use 1 1/2 pvc if you want to upgrade it.

theMeat · Dec 27, 2021

1.25” is 31.75 mm
Would get a precise measurement and check out this link. Scroll down it has sizes for hole

Bulkhead ABS Slip x Thread (Slip on the Flange/Head side)

Bulkheads are used to attach plumbing to aquariums and sumps to allow water to flow through them. These low profile reef safe bulkheads are made from black ABS plastic. Our supplier manufactures these slightly thicker than competitor aquarium bulkheads making them more reliable. Bulkheads come...

www.bulkreefsupply.com

FL_Reef · Dec 27, 2021

Go

theMeat said:
1.25” is 31.75 mm
Would get a precise measurement and check out this link. Scroll down it has sizes for hole

Bulkhead ABS Slip x Thread (Slip on the Flange/Head side)

Bulkheads are used to attach plumbing to aquariums and sumps to allow water to flow through them. These low profile reef safe bulkheads are made from black ABS plastic. Our supplier manufactures these slightly thicker than competitor aquarium bulkheads making them more reliable. Bulkheads come...

www.bulkreefsupply.com

Good info. Looks like I’ll need 1/2” ones. Any idea how the drain works? I’m envisioning a pvc pipe the height of where my overflow box grooves are, maybe just below? My display tank has an overflow box. I ended up putting a loose fitting cap on the drain pipe, drilled a bunch of holes in the side of the pvc, and drilled a hole for an airline tube to quiet it down. Same principle here?

theMeat · Dec 27, 2021

FL_Reef said:
Go

Good info. Looks like I’ll need 1/2” ones. Any idea how the drain works? I’m envisioning a pvc pipe the height of where my overflow box grooves are, maybe just below? My display tank has an overflow box. I ended up putting a loose fitting cap on the drain pipe, drilled a bunch of holes in the side of the pvc, and drilled a hole for an airline tube to quiet it down. Same principle here?

Yeah, something like that. Would recommend you run a herbie style with the two holes. Will be near silent