The present invention is directed to an aquarium net assembly for an aquarium. The aquarium net assembly includes a net sack for retaining fish, a frame for holding the net sack, an ergonomic handle for holding the aquarium net assembly; and a wand connecting the frame to the handle. The present invention is also directed at a novel ergonomic handle for an aquarium net assembly for an aquarium. The handle includes an elongated body for holding the handle, the body having a proximal end and a distal end with respect to a net; and a cavity disposed in the proximal end for receiving a wand of the aquarium net assembly.

An aquarium filter cartridge including activated carbon or the like and a housing wherein the water traces an S-shaped path is disclosed. In the S-shaped path the water flows horizontally through a floss type filter, downward to the bottom of the housing, horizontally into the bottom of the carbon cartridge, up through the carbon filter, and out the top or upper side of the housing back into the aquarium.

A birdcage watering device is provided with a no-spill valve and method of attachment. The watering device comprises a valve attached to a water chamber comprising an extended leg such that when the watering device is completely assembled the valve may be displaced to fill trough. Particularly, the extended leg of the valve produces an angled opening to permit flow of water from the water chamber without clogging or getting "stuck" in the valve opening. The water chamber is easily removed for refilling and the valve is designed to prevent the spilling of water during the process. A method of attachment is also described that allows the device to be on the outside of the birdcage while being secured from the inside of the cage, thus allowing for easy refilling of the water chamber of the device.