Ocean Free Hydra Internal Filter and Depurator

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Ocean Free Hydra Internal Filter and Depurator

Ocean Free Hydra Internal Filter and Depurator

The natural beauty of an aquarium creates fun and excitement in your living space. However successful fish-keeping requires the aquatic hobbyist to understand basic fish-keeping principles and to conduct regular aquarium maintenance. Poor water quality is every aquatic hobbyist’s worst nightmare, as unfavorable water conditions (i.e, high ammonia levels, excessive nutrients) could potentially stress and kill your aquarium inhabitants.

OF® Hydra Aquatic Depurator, powered by Qian Hu’s patented Hydro-Pure Technology, produces Hydroxyl radicals (•OH) which effectively detoxifies harmful Ammonia and many other toxic ions to transform poor quality water conditions into a safe and stable living environment for aquatic life forms to thrive-in.

Biological & Mechanical Filtration

A premium filter sponge used to trap suspended debris. High porosity sponge also allows beneficial bacteria to colonise the surface area provided.

The Hydra Internal Filter and Depurator also acts as a traditional internal filter – trapping dirt and debris in it's foam insert. Suitable for aquariums up to 800 Litres, please see technical specifications for details on what filter would be suit your aquarium. Unique filter media lasts 12 months.

Hydro-Pure Technology

The Hydra Internal Filter and Depurator is no normal internal filter. Using Hydro-Pure technology that is capable of enhancing the natural filtration processes in aquariums by as much as 50% when compared to conventional systems. With the help of the Cata-Pure Cartridge the traditional nitrogen cycle is sped up as several stages are by passed andunnecessary.

Hydro-Pure Technology is a patented water detoxifying and depurating technology for applications in both Marine and freshwater Aquatic Hobby. It consists of two electro-plates to energize a cartridge box containing special Cata-pure Catalyst Media to generate strong reactive Hydroxyl radicals (•OH), which is the key to the detoxifying and depurating reactions process.

Hydro-Pure Technology is suitable for marine and freshwater fish tanks of all sizes, all types of fishes, plants and live corals including all levels of stocking density. It also helps in the prevention of New Tank Syndrome especially in Marine tanks application, perfect for any applications that requires pristine water condition of safe and stable level of Ammonia, nitrites and nitrates acceptable for aquatic life form.

Anaerobic Chamber

Media (not included) can be added to this chamber for anaerobic processes, where dissolved oxygen is absent or only present in small quantities.

Filter Flow Rate Power Size Aquarium
20 400 6 watt 50-100L
30 600 7.5 watt 100-200L
40 800 10 watt 200-500L
50 1000 15 watt 500-800L

Product Highlights
  • Hydra internal power filter.
  • Effectively controls nitrite and nitrate by eliminating ammonia with groundbreaking Hydro-Pure technology.
  • Ultra High Efficiency.
  • Stable Water Quality.
  • Environmentally Friendly.
  • Chemical Free process.
  • Modern filter design to maximize space of filtration.
  • Simple setup and operation
  • Easy to pull apart and cleant.
  • Very quiet motor operation and reliability

  • This product comes with a 2 year warranty excluding the impeller

Delivery costs for your order will be calculated during the checkout process using your designated delivery address and chosen delivery method. You will only pay one delivery charge for your order and this will be calculated on your entire basket after you have entered your delivery address. If for any reason your products are not deliverable to your chosen delivery address, the checkout will inform you of this before your order is submitted.

Our chosen couriers are DPD and Royal Mail. If an order is dispatched directly from a manufacturer then you may have a different courier delivering your order. Full tracking details for all orders sent by DPD will be provided when your order is shipped. You can choose ‘Express Courier’ to receive this service on any standard order. Any order sent from our suppliers, or with DPD will only be delivered Monday - Friday.

All stated delivery times begin from the moment your order is accepted which is when your order is shipped from our warehouse our suppliers. An order confirmation email is not the acceptance of an order by us.

A signature is required for all orders sent via DPD, at which point the responsibility for all consignments passes to you. If you have specified another recipient (who is not you) for delivery purposes, then you accept that evidence of a signature by the said recipient (or another appointed person) at your delivery address is evidence of delivery and fulfilment by DPD and this accepts the transfer of responsibility to yourself.  

We do not ship orders internationally.

To see a full list of our delivery charges and to read our terms and conditions, click here.

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