Sump diy flow and baffle placement advise

[stevediaz1]

I’m setting up a 40 gallon breeder DIY sump and I’m hoping if someone could give me some advice and ideas on my design I don’t want stagnant water so I created this design let me know what you guys think if this is good or not I’ll be running a eco-tech marine L2 Vectra pump to drain is 1 1/2 inch pipe and the return is a 1 inch pipe

 

[stevediaz1]

Let me know if you guys have a better design layout I already went through two different designs I think this is the easiest and best tell me what you guys think

 

[JonezNReef]

I getting ready to do a diy sump kind of like this except skimmer in the drain section and a refugium in the middle section. Your design will work for sure, just personal preference for most part.

 

[RocketEngineer]

If the first section is for filter socks, I would remove all but the one baffle that water passes below. Bio balls are not used much anymore. The section just before the pump would be an over-under-over bubble trap.

 

[Billyjose4]

I second replacing the bio-balls w/ ceramic media. Way better results.
I'd suggest either the 1" ceramic plate or the 1.5" spheres.
BRS Biologial Filtration Media