As with conventional units, it can be produced at any range of sizes and shapes in both glass and acrylic versions. The whole concept idea is to eliminate any apparatus attachment from the inside space of an aquarium obstructing the habitat or aqua-scape and to give best performance to all new aquariums. For its simplicity and safe operation, it does not require any combination of chambers or attachments that require assembling or connections between them via bulkheads, fittings or any other sort of plumbing in order to enable water into the external box and drain down into a filtration system to create its cycle and be pumped back up again to the aquarium. It will differ through its incorporations of a series of short, vertically oriented, narrow slots arranged in a horizontal row at a point near the upper end of its rear panel.
