So, I got a project (tasked by the power my god, err wife) I'm working on for our living room. It's not that hard of a project I think, if you break em up in small chuck... Overview:: Orange is the Overflow Purple is the Return flow Yellow is the Emergency Overflow pipe Red is the pump Green is the SUMP Black is wood cabinetries Actual "look" without the pluming: An other view with details: Water flow: Editable 3D diagram: LINK Purpose: Fresh Water Aquascape Fish that live well in aquascape tanks Aquariums lists 60g - Rounded Corner (purchased) 75g - Rectangle (18"W x 48"L x 21"H)(purchased) 56g - Rectangle (18"W x 18"L x 40"H)(will custom build) Taller then normal, I know this will need to be accounted for, separate topic 75g - Rectangle (18"W x 48"L x 21"H) (will purchase) 75g - Rectangle (18"W x 48"L x 21"H)(will purchase) Depending on price, might get it pre-drilled or drill it myself, separate topic Filtration: SUMP Rectangle (14"W x 70"L x 14"H) Below tank #4/5 4 compartments: Inflow/Mechanical Filter Largest/BIO Balls Small/Heating section Outflow/water reserve Overflow type: Bean Overflow Tank #5 3x 2" holes Water Bridge: There will be 2x type of bridge: Direct bridge Holes will be 6"W x 6"L x 8"H With a 6"W x 16"L x 8"H viewable Diagram: Link Downward bridge "V" shape Holes will be 6"W x 6"L x 8"H With a 6"W x 16"L x 8"H viewable Diagram: Link (working on it, an other topic) ============================= Questions ============================= To maintain 6x turn over (about 2k Gal / hrs) which pump do you suggest? Can this SUMP size maintain this aquarium? Can the tank #5 with a 2" Bean overflow handle the flow? Bottom Pre-drilled, direct drop to SUMP; VS side drilled with 45 elbo from outside tank stand (I'd extend and build around side to support / hide all plumming) I've added a 2" Overflow Emergency pipe in tank #1, is it enough? (non suction pipe) Do you think the "current" created by the water bridge be enough for each tank or should I add some power heads to make water move? I do intend to setup electronic sensor on tank #1 to stop the pump at first sign of trouble, so emergency might not be needed. And lastly.... Am I out to lunch dreaming pink flying monkeys or this can work?