theReefKing
New member
With the closed loop in mind you can just add two large feed holes 2"+ and all the returns you want.. I saw you posted on dcanderson22's thread that's I believe the route he went I think his are 3" or possibly larger.. As for check valves it is best to just make the sump large enough to hold All the volume of the still tank vs engineering a failure point into the mix.. If it's for the CL simple ball valves and unions will get you full adjustability and access to maintenance.. That's something to consider is plenty of unions to be able to get it apart without cutting..
So in short I'd say ditch the check valves, they fail and reduce flow. just build the sump to be able to hold everything and then some.
Davm.m and Dapg8gt THANK YOU!!!
Maybe check valves are not such a good idea.... I honestly thought every tank with returns to the bottom of a tank had them. Shows you how much I have to learn.
Your help got me too ask a few questions I didn't consider and I noticed a huge design flaw. I have the bottom returns into the display on the OPEN filtration loop! I would have been a stuck check valve or a blocked check valve away from draining the whole tank!
I am working on updating the model, by the time I'm ready to make the build the design is going to be so different! Awesome, that is exactly what I was hoping for!
Thanks again for your advice and expertise.


