Pond and water garden aeration systems comprising water pumps, air compressors, air blowers and a finned wheel for pressurizing and aerating ponds and aquariums; Pump impellers; Aquarium pumps; Automated pet appliances, namely, feeders and waterers; Diffusion pumps; Electric pumps; Electronically and power-operated tools, namely, pullers and components therefor, nut splitters, extractors, separators, spanners and coil spring compressors; Submersible pumps