Maxi-JetPH pump and power head is ideal for powering undergravel filters or creating internal water movement from its fully rotational output. The Maxi-JetPH incorporates a venturi aeration device to provide optimal aeration and gas exchange in the aquarium. A silencer keeps the venturi aeration device operating quietly. An adjustable air filter permits the user to fine-tune air volume and water mixing as desired. The intake tube adapter with prefilter screen prevents gravel or loose material in the aquarium from getting into the pump. Maxi-JetPH pump and power head includes an innovative triple-suction cup mount, an adjustable hook with cable guide, and a grid support for optional foam cartridge, and comes in a complete range of sizes.