Two Durso Style drains or a siphon and backup

jwilson

Reefing newb
I'm doing a 90 gal tech tank with a basement sump. It comes with two 1" megaflow drain assemblies.

My plumbing options are:
1.) two standard Durso drains (1" bulkhead) into one 1.5" drain
2.) same as 1) but with their own individual drains
3.) convert one megaflow into a submerged siphon drain and the other to be a dry (emergency) drain - with both being 1-1/2" pipe.

Which would you do and why? Thanks.
 
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