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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  1. impeller for Hydra nano.
    Ocean Free Hydra Nano Impeller
    £6.99
  2. Ocean Free Hydra Stream Hose Fastener
    Ocean Free Hydra Stream Hose Fastener
    From £2.99
  3. canister body, ocean free, hydra
    Ocean Free Hydra Filtron Canister Body
    From £48.99
  4. Ocean Free Pump Head For Hydra Filtron
    Ocean Free Hydra Filtron Pump Head
    From £99.99