A hang-on-back (HOB) filter or clip-on filter is a compact and space-saving filtration solution, perfect for aquariums and aquascaping. Mounted on the edge of the tank, it provides efficient mechanical, biological, and chemical filtration to maintain clean and healthy water. Its sleek design keeps the aquascape's interior unobstructed, allowing for creative and aesthetic layouts. Easy to maintain and highly effective, the HOB filter supports plant growth and ensures a thriving environment for fish and shrimp.