The baffles have 2" widths to compensate for the 24" limitation on the depth of the sump. There's three bubble traps since I'm planning on an 8' high dual recirculating beckett injection protein skimmer returning into the first section (filter socks).
The 1" opening into the second section is to allow some fresh water to access the dsb surface. I may add a mesh and foam block to increase the resistance through the opening.
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