375, opinion with the drains

[am3gross]

I have a 375, it has 2- 1 inch pressure and 2- 1 1/2 inch returns. Can I use 3 of them for the drains and have just one return? will it be enough turnover? I have the Vectra M2 for a return. The reason for only using 1 return would be so i can set up the bean style overflow and have the 1 1 1/2 inch hole for an emergency drain.

Thoughts?

 

[lapin]

See chart

1" PVC Flow Rate?

What is the flow rate of 1" PVC? It is a full siphon herbie and will be going down about 12' if that changes anything.

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