Difference between 1.5" and 2" drain in overflow

[findingnemo1]

Christy i'll talk to Craig tonite and see what we had on there. Cause that tank was in my living room in Sherwood park and i never heard it. And i know we did have a reducer on it as we'll.

[PoonTang]

Initally my tank was surging too and I have dual 1.5" and a dart. I wound up having to use 2 drain valves for a while to get increased flow to my sump and that would quiet it down so I would say its definately a flow issue. Go with the 2" it will be quieter and safer.

[sphelps]

Durso standpipes should be one size bigger than the drain to work properly, so if you're using 1.5" pipe for the drain, your durso standpipe should be 2". This should fix your problem.

FYI many plumbing stores will sell PVC pipe by the foot.

[christyf5]

Originally Posted by sphelps

Durso standpipes should be one size bigger than the drain to work properly, so if you're using 1.5" pipe for the drain, your durso standpipe should be 2". This should fix your problem.

FYI many plumbing stores will sell PVC pipe by the foot.

Unfortunately we don't have many plumbing stores. We have Home Hardware. Home Depot doesn't sell it (they only sell the type for irrigation, tons of holes in it) and I'm not sure about Rona, they seem more like a "I need to hang a picture, do you have nails and an apartment sized hammer?" type of store, either that or we have a mini-Rona

[sphelps]

Originally Posted by christyf5

Unfortunately we don't have many plumbing stores. We have Home Hardware. Home Depot doesn't sell it (they only sell the type for irrigation, tons of holes in it) and I'm not sure about Rona, they seem more like a "I need to hang a picture, do you have nails and an apartment sized hammer?" type of store, either that or we have a mini-Rona

Well either way you should be using a 2" standpipe to match your 1.5" drain. You could always use 2" ABS which may be easier to find in your area, it also typically comes in 4 foot lengths.

[christyf5]

Originally Posted by sphelps

Well either way you should be using a 2" standpipe to match your 1.5" drain. You could always use 2" ABS which may be easier to find in your area, it also typically comes in 4 foot lengths.

Oh I always thought ABS was bad?

[sphelps]

Originally Posted by christyf5

Oh I always thought ABS was bad?

No, that's a common myth. ABS is completely potable and safe for aquariums. ABS is used in drains because it has a higher resistance to chemicals. Also most of the plastic parts already in your aquarium like pumps and magnet cleaners are made from ABS.

[StirCrazy]

Originally Posted by christyf5

Oh I always thought ABS was bad?

Christy, we went throught this 10 years ago......

Steve

[banditpowdercoat]

Durso's will allways make some noise but ya if pipe is to small, it will make more noise.

I will never do another tank unless it's Herbie style. In fact, Combine them for 3 drains. 1 Herbie gate valved, another Durso, full open to take the excess the gate valved one doesn't and a Emergency line.

I want to change my tank now, but I can't get behind it to re-plumb my drains

[Seth81]

Originally Posted by banditpowdercoat

Durso's will allways make some noise but ya if pipe is to small, it will make more noise.

I will never do another tank unless it's Herbie style. In fact, Combine them for 3 drains. 1 Herbie gate valved, another Durso, full open to take the excess the gate valved one doesn't and a Emergency line.

I want to change my tank now, but I can't get behind it to re-plumb my drains

If you do go Herbie, just don't do what I did... see my post in DIY "Herbie design fail"