This invention is a surface (ground) filter for aquarium water purification. This filter is placed on the bottom of the aquarium, which can suck the waste out of the tank to the canister filter (external filter).It is mainly made of small plastic pieces connected by main stream channels. Each plastic piece is composed of a couple of inverted pyramids that acts like a funnel figure 2a no. (10).Water flows through the main channels sucked by an external filter. In the base of each inverted pyramid a small hole opens to the drainage channel, which has a hollow inverted V shape figure 3a no. (11).Water, particles and fish waste are passed through the channels to the external filter (Canister filter). The assembly of all pieces will cover most of the ground surface of the aquarium tank. At the end of the assembly a vertical channel (collector) collects the drained water figure 5 no. (23).Collected water is transferred to the external filter outside the aquarium. A hose connects the external filter with the collector. Another hose is connected to the same filter to return the filtered water back to the aquarium FIG.3A
