Aquarist
The aquarium hobbyist has many questions to discuss. The necessary specialist knowledge in the field of biology, chemistry and technology is complex. Understanding an aquarium presupposes the joy of dealing with the technology and its interactions with the water as well as the welfare of the fish and plants.
Today's aquarium technology offers a variety of devices and solutions that bring many advantages for the aquarist. The combination of different aquarium components and the resulting interactions with the location of the tank, the animals in the water and the operator make this hobby an exciting passion.
Aquarist Products
Clean + Clear

The Clean + Clear is a new compact water treatment system specially designed for base cabinets. The filter drawers are removable and very easy to use. The mechanical pre-filter chamber consists of three mat layers. Water distribution plates distribute the water flow evenly through the mat layers, and the biological trickle filter placed underneath. A clear water chamber is intended for the connection of a feed pump (provided by the customer). A protein skimmer with a venturi pump is operated in the partial flow. The protein skimmer can also be operated with ozone (on option).
Wooden Air Stones
Power Skimmer and Protein Skimmer Model I
Using the so-called counter current principle, Sander Power Skimmer (internal) and Protein Skimmer Model I (external) allow for an intensive skimming process and the removal of toxic protein compounds.
The big reaction tube provides excellent oxygen enrichment of the aquarium water.
The Power Skimmer (internal) and Protein Skimmer Model I (external) can be operated with a water pump (injector) or with an air pump and wooden air stones.
Protein Skimmer Model Maxi-Skim & Piccolo
The Maxi-Skim is ideal for the first-time hobby aquarist. Its compact construction is perfect for small aquaria where there is very limited space for filter technology.
With its very fine air bubbles produced by wooden air stones, the Maxi-Skim will provide clear and healthy marine water as well as oxygenation.
The removal of toxic substances and dirt compounds is enhanced by using the Maxi-Skim additionally as an ozone reactor.
Maxi Skims must be operated by an air pump (provided by the customer); the recirculation of water is produced by the built-in air-lift.
Protein Skimmer Model II and III
Sander protein skimmers Model II and III are perfect as external skimmers for marine and freshwater aquaria up to a volume of 7000 L.
The protein skimmers models II and III are operated with wooden air stones. Sander wooden air stones are made from lime wood (German natural product) and produce finest air bubbles, even in fresh water. They work also with only little pressure loss. The models II P and III P are operated with an injector and a booster pump.
Both models are suitable for the operation with ozone and will serve perfectly as ozone reactors, to maintain a clear and healthy water quality over time.
These protein skimmer models feature clip fasteners between the foam beaker and the reactor. Cleaning the foam beaker is easier now and maintenance can be done without interrupting the function of the unit for a long time.
Protein Skimmer Model* | II | III |
---|---|---|
Water flow L/h | 500-1000 | 1000-2000 |
Air flow demand L/h | 300 | 600 |
Protein Skimmer Model** | II P | III P |
---|---|---|
Water flow L/h | 500-1000 | 1000-2000 |
Air flow demand L/h | 400 | 600 |
* with wooden air stones
** with injektor and booster pump
Ozonizer S 500
All model S ozonizers guarantee reliable ozone production at low energy consumption.
The ozonizer S 500 has a maximum ozone output of 500 mg/h. The ceramic ozone electrode is reliable and can be cleaned easily, if required. A potentiometer (adjusting knob) allows an easy adjustment of the ozone output required for the individual application.
The S 500 can be operated in fresh water as well as in marine water systems.
Caution: the unit is intended for a vacuum operation only. A rest ozone decomposer (active carbon cartridge) has to be installed at the air outlet of the ozone reactor.
Ozonizer S 1000
The ozonizer S 1000 has a maximum ozone output of 1000 mg/h. The high-quality components guarantee a reliable ozone production at low energy consumption. The ceramic ozone electrode is robust and can be cleaned easily, if required. A potentiometer (adjusting knob) allows an easy adjustment of the ozone output required for the individual application.
The S 1000 has been designed for medium-size fresh and marine water aquaria and can be also be used in pond installations.
Caution: the unit is intended for a vacuum operation only. A rest ozone decomposer (active carbon cartridge) has to be installed at the air outlet of the ozone reactor.
Ozonizer XT 2000
Rated up to 2000 mg/h of ozone output, the XT 2000 ozonizer model is unique in its line. Its high-quality components and processor-controlled ozone production design ensure reliable ozone output while keeping energy consumption to a minimum. The ozonizer is equipped with a large touch screen display for quick access and fine adjustments of all the operational parameters. The XT 2000 is a professional tool for the ambitious aquarist and is perfectly suited for fresh water, ponds and marine water applications.
Caution: the unit is intended for a vacuum operation only. A rest ozone decomposer (active carbon cartridge) has to be installed at the air outlet of the ozone reactor.
O-DRY Air Dryer
The O-DRY air dryer is Sander newest development. A better ozone yield e.g., for the XT2000 ozonizer, will be achieved with the supply of dry air. The process-controlled O-DRY is manufactured with high quality components. It offers an effective solution at optimum power consumption. The Plug & Play unit is the answer for the exigent aquarist. The O-DRY can be used in fresh water or marine aquariums.
Note: For the operation in a vacuum system only (no operation with pressurised air supply). The device is designed as a bench top unit. It has to be placed in a well aerated area and should never be covered.
Ozonizers Model Certizon
The Sander Certizon range of ozonizers offer from 25 mg/h to 300 mg/h of ozone output. All Certizon ozonizers are equipped with an adjusting knob for easy regulation. The ozone element can be cleaned easily, if required. The light and compact design can be installed and operated on a bench or wall-mounted.
Caution: the unit is intended for a vacuum operation only. A rest ozone decomposer (active carbon cartridge) has to be installed at the air outlet of the ozone reactor.
Redox Potential Measuring and Regulation Unit
The redox potential measuring and regulating unit can be operated in combination with Sander ozonizer models XT 2000, the S and Certizon series. The unit is ready for operation and a calibration of the redox electrode is not required. Adjusting the setpoint is easily achieved by turning the setscrew, using the screwdriver provided with the unit. The accurate operation of the electrode requires it to be cleaned in regular intervals or on demand. You can use fluid citric acid (drugstore product) to clean the electrode membrane.
The electrode is equipped with a 3 m cable as well as a plastic bracket for installation on the tank edge.
Fresh Water Protein Skimmer Fresh-Skim
Sander fresh water protein skimmers Fresh-Skim have been developed especially for the treatment of pond water and are ideal for the Koi enthusiast. Only a Fresh-Skim provides you with crystal clear water, and protein compounds and turbidity are removed before they become harmful for the system.
The Fresh-Skim, like all Sander protein skimmers, is ready for the operation with ozone and will serve perfectly as an ozone reactor. All models have an ozone inlet connection.
In fresh water, the use of ozone enhances and increases the efficiency of the skimming process. It also offers valuable advantages like disinfection, oxidization of nitrite and yellow substance, and, at the same time, oxygen enrichment of the water.
Accessoires and Spare Parts
Sander offers accessories for its ozonizers and protein skimmers to help create an appropriate aquarium ecosystem to the animals:
- Ozoflex tube 4/6 mm
- Silicone tube 4/6 mm
- Air flow meter 50 bis 1000 L/h
- Hydrometer