{"product_id":"ocean-free-hydra-superior-bio-foam","title":"Ocean Free Hydra Superior Bio Foam","description":"\u003cp\u003eReplacement bio foam for the Hydra internal filter. The foam does two jobs — it strains debris and it houses the nitrifying bacteria colony — which is why replacing it and the Cata-Pure cartridge in the same week is a bad idea on an established tank. Stagger them, and rinse the new foam in tank water rather than under the tap so you keep what bacteria you have.\u003c\/p\u003e\n\u003cp\u003eSized per model. Cartridges, impellers and shafts for the same filters are in the \u003ca href=\"\/collections\/ocean-free\"\u003eOcean Free range\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.yihufish.com\/products-2\/filter\/of-hydra-powered-by-hydro-pure-technology\/hydra-aquatic-depurator\/\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMore about this range at Ocean Free (Yi Hu Fish Farm Trading)\u003c\/a\u003e\u003c\/p\u003e","brand":"Ocean Free","offers":[{"title":"20","offer_id":56007242973506,"sku":"OCEANFREE063","price":11.5,"currency_code":"AUD","in_stock":false},{"title":"40","offer_id":56007243006274,"sku":"OCEANFREE064","price":16.15,"currency_code":"AUD","in_stock":false},{"title":"50","offer_id":56007243039042,"sku":"OCEANFREE065","price":19.64,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/6676\/0120\/files\/QHU25a.png?v=1787817247","url":"https:\/\/www.peekapaw.com.au\/products\/ocean-free-hydra-superior-bio-foam","provider":"PeekAPaw Pet Supplies","version":"1.0","type":"link"}