FAQ

What is Cata-Pure?
- Cata-Pure is the name of the cartridge media used in Hydro-Pure Technology.
What is the usage life of the Cata-Pure?
- The Cata-Pure media can be continuously used for up to 12 months. Regular interval of washing and rinsing is necessary to remove dirt within the cartridge. Replace the cartridges after every 12 months for maximum performance.
Is the Cata-Pure an activated carbon/charcoal?
- The Cata-Pure is a carbon-based media that has been specially formulated with metallic additives to work with Hydro-Pure Technology. Replacing Cata-Pure with activated carbon will not work, and may even cause damage to the unit.
Will I get an electric shock if I touch the electro-plates?
- The electro-plates are powered by low level DC voltage which is safe and will not cause any electric shock. However, it is advisable that you switch off the Hydra’s power whenever you are carrying out any maintenance to it.
Can I modify the Hydra’s electro-plates and Cata-Pure cartridges?
- Do not attempt to modify or use the Hydra in any other ways. Serious injury may occur if you do so. We will not be liable for any damages or injuries inflicted to the human body due to inappropriate or improper installation, set-up or use, misuse, negligence or tampering of the unit.

How do I use a Hydra Internal Depurator?
- Hydra Internal Depurator needs to be fully submerged into the aquarium water. It can be placed inside the main aquarium tank or inside a filtration system.
- E.g. a sump tank’s compartment, preferably after the mechanical filtration compartment.
The Hydra Internal Depurator’s impeller is not functioning properly.
- Please follow the maintenance instruction to remove the impeller. Wash the impeller to remove any dirt and debris. Check the impeller shaft and rubber caps for any defects.
The Hydra Internal Depurator’s venturi is not functioning properly.
- A venturi works by the effects of differential pressure suction created by the water flow. For the venture to work, the Hydra Internal Filter’s top portion must be within 1cm from the water surface. There will not be enough suction if the Hydra Internal Depurator is placed more than 1cm below the water surface.

How do I use a Hydra Stream?
- Hydra Stream is an adapter unit. It is not a complete filter system. Hydra Stream should be connected to a filtration flow system, preferably at the final stage of filtration, after the mechanical or bio-filtration phase.
- Example, at the outlet of a canister filter. Hydra Stream can also be attached with a pump and submerged into a sump tank compartment.
Is Hydra Stream waterproof?
- Yes, the Hydra Stream unit is totally waterproofed and may be submerged into water.
Does the Hydra Stream have a fix inlet and outlet direction?
- The Hydra Stream is designed as a pass through adapter. Any flow direction is fine.
Placement position of Hydra Stream
- The Hydra Stream can be placed in any direction. However, if the water flow is very slow, it is recommended to place the Hydra Stream vertically upright with the water going in from the bottom and out from the top. This is to ensure water is in full contact with both
  the titanium electro-plates.
Flowrate reduction when using Hydra Stream
- Water flow rate after passing through the Hydra Stream, will be reduced. This is normal and it is
  due to the passing through of the Cata-Pure cartridges. When connecting the Hydra Stream to
  Hydro-Pure Technology the filtration system, please take into consideration the flow rate reduction so that it does not
  affect the overall filtration.

Do I have to clean the Cata-Pure cartridge?
- Yes. Regular maintenance is necessary to ensure that the Cata-Pure cartridge does not get clogged with dirt. Rinse the Cata-Pure with clean water whenever you are cleaning the filtration.
How do I clean and perform maintenance of Hydro-Pure Technology products?
- Remove the Cata-Pure cartridge from the Hydro-Pure Technology product. Rinse and shake the cartridge in water to release dirt. Clean the cartridge exterior. Clean the electro-plates surface. Re-insert the cartridge into the product.
How often do I need to clean the Hydro-Pure Technology product?
- A reduction in flow rate indicates a clogged system. Please inspect and clean the product on a regular basis.
Are the Electro-Plates replaceable?
- The electro-plates are made of titanium and they do not need to be replaced throughout the entire operating life of the product. Regular cleaning is recommended for optimum performance.
It is normal that one of the electro-plate’s surface will becomes brownish, due to the chemical reaction deposits. Please clean the electro-plate’s surface during maintenance.
- It is normal that one of the electro-plate’s surface will becomes brownish, due to the chemical reaction deposits. Please clean the electro-plate’s surface during maintenance.

Below is a compilation of the common questions regarding Hydro-Pure Technology. To find out more, please download the FAQ from the link provided.