1” vs 1.25” return, HELP!

[Tuffloud1]

I plan on running 2 separate independent return pumps/lines.

I’m about to place my order for a new sump and have the option of drilling the sump for 2 - 1.25” bulkheads or 2 - 1” bulkheads.

The issue is, I cannot find 1.25” bulkheads or silicone tubing ANYWHERE.

I plan on running 5-8 x turnover rate on my 262 display.

Should I go with 1” or 1.25”?

 

[Silent]

Amazon has everything

 

[Tuffloud1]

Amazon has everything

Thanks but those are threaded.

I don’t like threaded bulkheads and they also restrict flow More than slip.

 

[Silent]

so you are looking for slip/slip?

 

[sharpimage]

Bulkhead ABS Slip x Slip

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

 

[Tuffloud1]

Yes

 

[sharpimage]

BRS has everything fish related

Black Vinyl Tubing Sold by the Foot

Black Vinyl Tubing will help keep light from entering your plumbing like traditional clear tubing will. The black color also keeps things looking sharp and clean. Five Sizes Available: 1/2" ID x 5/8" OD 3/4" ID x 1" OD 1" ID x 1 1/4" OD 1 1/4" ID x 1 1/2" OD 1 1/2" ID x 2" OD Black Vinyl...

www.bulkreefsupply.com

 

[Tuffloud1]

BRS has everything fish related

Black Vinyl Tubing Sold by the Foot

Black Vinyl Tubing will help keep light from entering your plumbing like traditional clear tubing will. The black color also keeps things looking sharp and clean. Five Sizes Available: 1/2" ID x 5/8" OD 3/4" ID x 1" OD 1" ID x 1 1/4" OD 1 1/4" ID x 1 1/2" OD 1 1/2" ID x 2" OD Black Vinyl...

www.bulkreefsupply.com

Way to stiff to use in the return section and make tighter bends. I need silicone.

 

[Silent]

2x 1.5" Bulkhead Fitting 1-1/2" 1 1/2 Inch Aquarium Pond Rain Barrel Slip x Slip | eBay

Bulkhead Fittings 1 1/2". Standard 1 1/2" (1.50") bulkhead fitting. Includes gasket. 2x Filter Sock S 4" x 13" Sump Felt 200 Micron Ring Aquarium Marine Reef Wet Dry. 4x Filter Sock S 4" x 13" Sump Felt 200 Micron Ring Aquarium Reef Wet Dry Sump.

www.ebay.com

Ebay has a few different links

 

[Tuffloud1]

2x 1.5" Bulkhead Fitting 1-1/2" 1 1/2 Inch Aquarium Pond Rain Barrel Slip x Slip | eBay

Bulkhead Fittings 1 1/2". Standard 1 1/2" (1.50") bulkhead fitting. Includes gasket. 2x Filter Sock S 4" x 13" Sump Felt 200 Micron Ring Aquarium Marine Reef Wet Dry. 4x Filter Sock S 4" x 13" Sump Felt 200 Micron Ring Aquarium Reef Wet Dry Sump.

www.ebay.com

Ebay has a few different links

These are 1.5”. I need 1.25”.

 

[Silent]

I guess you could do these but they are more expensive

PVC Bulkhead Tank Fitting, 1-1/4" Pipe Size, Socket x Socket Connection Type

Bulkhead Fitting, 1 1/4 In, Socket

www.grainger.com

 

[sharpimage]

I guess if you looked for 1.25 and can't find it, the answer is pretty clear.

 

[Tuffloud1]

Do I need 1.25” pipe for my application? Should I have them drill for 1” or 1.25”?

 

[Tuffloud1]

I guess if you looked for 1.25 and can't find it, the answer is pretty clear.

This is the confusing thing- Neptune recommends 1.25” for their COR pumps but you can’t find 1.25” bulkheads or certain tubing.

 

[WVNed]

If you are talking returns 1 inch will be fine. I use 1.5 inch drains on my 240.

 

[KStatefan]

This is the confusing thing- Neptune recommends 1.25” for their COR pumps but you can’t find 1.25” bulkheads or certain tubing.

Product Listing 8170-012 Bulkhead-Fittings-Sch80 at FlexPVC.com

8170-012 Bulkhead-Fittings-Sch80 %%name%%

flexpvc.com

McMaster Carr has silicone tubing in 1.25"

 

[John08007]

Personally i feel that for a return bigger is better, why not play it safe and go with the largest possible

 

[TaylorPilot]

I wouldn't use silicone tubing for long runs. It kinks very easily. I would use mostly rigid PVC with 45 fittings, and only use a 8-12" straight length of silicone coming right off the pump to isolate any vibration. As far as pipe sizing, at 8X turn over, you are only talking 2000 GPH total, or 1000 GPH per pump. 1" should be fine. But if you are really worried about it, just run 1.25 pipe and reduce it down right before the outlet to 1". That should cut down on most of your pipe friction and shouldn't restrict flow much at all. The numbers get even better when you drop down to the 5x turn over. I wouldn't get too hung up on maintaining a certain number. Just reduce restrictions and you should be fine.

 

[Tuffloud1]

I wouldn't use silicone tubing for long runs. It kinks very easily. I would use mostly rigid PVC with 45 fittings, and only use a 8-12" straight length of silicone coming right off the pump to isolate any vibration. As far as pipe sizing, at 8X turn over, you are only talking 2000 GPH total, or 1000 GPH per pump. 1" should be fine. But if you are really worried about it, just run 1.25 pipe and reduce it down right before the outlet to 1". That should cut down on most of your pipe friction and shouldn't restrict flow much at all. The numbers get even better when you drop down to the 5x turn over. I wouldn't get too hung up on maintaining a certain number. Just reduce restrictions and you should be fine.

I plan on using silicone just from the pump to the sump bulkhead.

What do you recommend to connect the silicone tubing to the bulkhead?

 

[TaylorPilot]

Sump bulkhead? Why do you want to attach the return to the sump itself? As far as how to connect to a bulkhead, use a barb fitting. It is really the only way I know of. I will say I have never used a single bulkhead fitting when connecting a return line. I have always just mounted the hard PVC to the stand using standoffs and it free floats over the back and into the tank. There are several benefits and only one downside. The down side is, you can see more of the return line when looking from above a rimless tank. However, when looking into the tank from the front, you see less of the the return than you do with drilling it through the back. Plus, when drilling through the back, you typically have it siphon down a lot further than we setup correctly over the back.