For sale: External Overflow Box imported from America, suitable for connecting the aquarium to the sump without the need to drill the aquarium glass. Suitable for use with: Marine and reef aquariums. Freshwater and river aquariums. Sump and external filtration systems. Aquariums that do not have pre-made drainage holes. Features: Made of durable acrylic, it operates with a siphon system to transfer water from the aquarium to the sump, with a design that helps draw water from the surface of the aquarium and get rid of the oily layer and surface impurities. Its approximate dimensions are fully shown in the pictures, and its condition is used and only needs cleaning, which does not affect its operation. Note: It is preferable for the buyer to have prior knowledge of installing and adjusting Overflow and Sump systems. Inspection and pickup in Jeddah - Al-Naseem district. Price: 450 SAR. Contact serious buyers only. Search terms: Overflow – Overflow – Overflow Box – Sump – Aquarium filter – Marine aquarium – River aquarium – Aquarium supplies – Acrylic.