Does anyone know what size the stock return plumbing is on the RS 425 G2?

[VanCityReef]

Title says it all, anyone know what size the PVC pipe is on the stock return for the RS 425 G2?

 

[blaxsun]

1" (25mm) on the return.

 

[VanCityReef]

1" (25mm) on the return.

But is it actually metric or imperial? If it's metric I'll need an adapter, if it's imperial I can just use a coupler.

 

[blaxsun]

I believe it's metric.

 

[JTN]

1" (25mm) on the return.

Does anyone know if this changed. I just received the US bulkhead replacements, and the returns are 3/4”.

 

[blaxsun]

Does anyone know if this changed. I just received the US bulkhead replacements, and the returns are 3/4”.

I believe the new G2 models feature dual returns, so it's probably the stock 3/4" return plumbing. My 750 has a Y adapter that splits from 1.25" to 2x 3/4"