Tunze has redesigned the Master Doc Series skimmers and it sure looks like two new models have been released (9620, 9640). Tunze has pretty much started over with their Master Doc Series skimmers and has introduced quite a lot of new features including: Intermediate chamber with phase water: The patented Anti-Overfoaming System® prevents an overfoaming of the skimmer and regulates the skimming action according to surface tension of the aquarium water and water level. The skimmer operates independently and automatically sets its best efficiency. Also an ozone port has been added. The 9620 will easily handle aquariums up to (2,000 liters) 528 gallons while the 9640 can handle (4,000 liters) 1056 gallons. The 9620 is set to get a retail price in the $1020 range, while the 9640 model is expected to hit at $1200.
The characteristic features of the Master DOC skimmer models 9620 / 9640 are primarily ergonomics and efficiency. This new skimmer is a real technical evolution of the conventional external protein skimmer for aquariums. Their high air output is suitable in case of a lot of livestock or sensitive hard corals, in particular, for external operation or directly in the filter tank. Very easy installation and operation; Master DOC skimmers 9420 / 9460 are especially low-noise during operation as well.
Master DOC Skimmer 9620.000
Contains a Hydrofoamer Silence 9420.04, recommended for
aquariums up to 2,000 l (528.3 USgal.) of salt water.
Dimensions: diam. 200 x H 580 mm (diam. 7.87 x H 22.8 in.); 230 V
/ 50 Hz (115 V / 60 Hz); 15 W.
Water flow rate: from 500 to 1,500 l/h (132 to 396.2 USgal./h) with a
separate recirculation pump; air output: 1,100 l/h (290.5 USgal./h);
skimmer cup volume: 2 l (.52 (USgal.).
Master DOC Skimmer 9640.000
Contains two Hydrofoamer Silence 9420.04, recommended for
aquariums up to 4,000 l (1,056 USgal.) of salt water.
Dimensions: diam. 300 x H 650 mm (diam. 11.8 x H 25.5 in.), 230 V
/ 50 Hz (115 V, 60 Hz), 30 W.
Water flow rate: from 1,000 to 3,000 l/h (264 to 792.5 USgal./h) with
a separate recirculation pump; air output: 2,200 l/h (581.1 USgal./
h); skimmer cup volume: 7 l (1.8 USgal.).
