Tunze Hydrofoamer - 9005.040
TUNZE® Hydrofoamer 9400.040 is the core unit of Master DOC Skimmer 9420, 9440, 9460 and 9480. It has been designed on the dispergator technology and uses a patented pump drive with dispergator.
The aquarium water is drawn in through a strainer and an air diffuser nozzle. This nozzle calibrates the water flow rate and produces an optimal negative pressure; the air drawn in constantly and uniformly by the sound absorber; the water and the coarse air bubbles are finely disperses and pumped on by the dispergator. The pump chamber has a large volume so that a very high volume of fine and homogeneous mixture of air and water can be produced. TUNZE® Hydrofoamer 9400.040 stands out in particular for its high efficiency. It produces a maximum of air output consuming a minimum of energy.
This pump specifically developed for protein skimmers can be fitted in addition to the Master DOC Skimmer 9420 or 9460 which increases the skimming capacity per Hydrofoamer to suit a tank volume of about 2,000 litres (528 USgal.). TUNZE® Hydrofoamer 9400.04 can also be used as a standard dispersant on every conventional skimmer of this size on the market.
Technical data:
Maximum air capacity: 800 l/h (211 USgal./h) to 1,300 l/ (343 USgal./h) of water flow rate.
Energy consumption: 23 W at 800 l/h (211 USgal./h) air capacity, motor with protective thermostat.
Pump outlet with ¾” NPT thread.
Pump housing with strainer and silencer.
Pump drive: Permanent magnet rotor with solid ceramic bearing and ceramic stop on the suction side, which prevents wearing action and noise.
Supplied with bushing, hose and clamps.




