How to design a overflow box for marine aquarium?

An overflow box is a device used in marine aquariums to drain water from the display aquarium down into the sump or filtration system. It consists of a **weir** and **drainpipes** that get water out of the tank and down into the sump. The overflow box works by removing excess water from the tank and depositing it into a sump. A sump tank collects water with unwanted chemicals or debris.

There are two main types of plumbing systems used in marine aquariums: **hard plumbing** and **soft plumbing** Hard plumbing involves the use of rigid PVC pipes and fittings, while soft plumbing uses flexible vinyl tubing, clamps, and barbed fittings. Both systems have their advantages and disadvantages, and the choice between them depends on the specific needs of your aquarium.

There are many different types of overflow boxes available for marine aquariums. Some popular options include

1. Modular Marine Overflow Boxes: These overflow boxes come in various sizes and flow rates, ranging from 800 gph to 3600 gph. They also offer low profile overflow boxes with removable weirs.
2. Marine Depot Overflow Boxes: These overflow boxes feature a one-piece acrylic hanger that fits on any aquarium. They are pre-drilled and ready for installation of the bulkhead fitting. They also come with vent tube assemblies and noise-reducing foam sleeve.
3. Aquarium Store Depot Overflow Boxes This website provides reviews on various types of overflow boxes, including hang-on vs. drilled overflow boxes, the best overflow boxes, hang on overflows boxes versus drilled overflow boxes, and how to install an overflow box on your aquarium.”