![]() ![]() Having more than 2 pipes available allows for a secondary dry emergency line in some configurations. This post assumes a bit of understanding of the system so read through that if you’re just starting out. I would continue to use the 2x.75" lines in each overflow as a return from sump to the tank (pressure side of the pump). Durso, Herbie, and BeanAnimal refer to the drain plumbing itself inside the overflow box. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright. Many aquariums with dual overflows can be retrofitted to use a siphon-based Herbie Overflow. If I add an additional wet to each one then it becomes a Bean. My thought was I would use the existing 1.5" drains for emergency overflows and add the full siphon drains (1", 1.25" or 1.5") to each overflow. Dual Nozzle Returns Bean Animal Plumbing Kit. This method is used in aquariums to create an ultra-quiet and ultra-safe overflow. But to do that I need to have an emergency drain. A 'Bean Animal' is a 3 drain pipe overflow system consisting of: one p rimary siphon, one primary emergency and a secondary emergency. So I decided I wanted to rework everything and go to full siphon drains. The design has the overflow box lower so the water level in the overflow box can be adjusted to be super quiet. The Fiji Cube Overflow Box is the ideal design for an overflow box. When I did my initial plumbing and leak test I could get the durso's quiet but the drains in the sump where very noisy & full of bubbles (which will cause salt creep). So he’s the ordeal basically why is a bean animal a herbie + durso when 2 herbies can accommodate for more flow and would be dead silent. The Fiji Cube overflow is the best value and best choice for a bean animal external overflow box. 75" returns are up close to the front of trapezoid close to where the sides meet it. The 1.5" drain is about dead center in the trapezoid and the 2x. The overflows are shaped like an Isosceles Trapezoid with the long side being part of the back wall of the aquarium. Each overflow has a 1.5" durso drain and 2 x. It is also a much cleaner looking setup.The original setup is a dual overflow. The benefit is a much more reliable overflow solution. Internal overflows are a little more daunting since they require drilling the aquarium or purchasing a predrilled aquarium. ![]()
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