Ocean Free

Hydra is a unique brand, known for its use of electrolysis in aquarium filtration to remove ammonia and nitrite much quicker than traditional biological filters. Available in a large range of sizes and in internal and external units, the Hydra units by Ocean Free are really changing fishkeeping and reducing the exposure of harmful ammonia and nitrite to fish in aquariums.

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Showing 32 Products

  1. sponge for an ocean free hydra nano.
    Ocean Free Hydra Nano Sponge
    £5.49
  2. impeller for Hydra nano.
    Ocean Free Hydra Nano Impeller
    £6.99
  3. Cata pure for hydra nano plus
    Ocean Free Cata-Pure for Hydra Nano Plus
    £11.99
    Out of Stock Online
  4. an outlet for ocean free hydra nano
    Ocean Free Hydra Nano Outlet
    £1.99
    Out of Stock Online
  5. blue, replacement venturi hose for ocean free nano
    Ocean Free Hydra Nano Venturi Hose
    £2.49
    Out of Stock Online

For delivery before Christmas, orders must be placed on or before 3pm on Wednesday 20th December. We cannot guarantee delivery of these orders pre-Christmas as we are reliant on our couriers, but will use our best endeavours to get orders placed on this date out to you before Christmas. For full details of our festive delivery and opening times click here

Please note: online orders placed after 3pm on Friday 22nd December will not be dispatched until the New Year. For full details of our festive delivery and opening times click here