{"product_id":"fluval-flex-foam-insert-57l-123l","title":"Fluval Flex Foam Insert 57L \/ 123L","description":"\u003cp\u003eThis is the mechanical stage of the Flex filter — the foam block that traps the large particles and debris before water reaches the carbon and BIOMAX. It is a consumable, not a one-off: rinse it in tank water between changes and replace it once it stops springing back or you can no longer squeeze the muck out of it. It does nothing chemical or biological, so it is not a substitute for a spent carbon insert.\u003c\/p\u003e\u003cp\u003eFluval lists this block (item A1375) for the Flex 15 US Gal \/ 57 L kit, and the 123 L kit ships with two foam blocks across its twin media chambers. For the 34 L tank the smaller block is on the \u003ca href=\"\/products\/fluval-spec-flex-34l-replacement-foam-block\"\u003eSpec \/ Flex 34L foam block\u003c\/a\u003e page.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFits\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFluval Flex Aquarium Kit, 15 US Gal \/ 57 L\u003c\/li\u003e\n\u003cli\u003eFluval Flex Aquarium Kit, 32.5 US Gal \/ 123 L\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction\u003c\/strong\u003e — mechanical filtration, trapping large particles and debris\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity\u003c\/strong\u003e — single block\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluval item number\u003c\/strong\u003e — A1375\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003ca href=\"https:\/\/fluvalaquatics.com\/us\/shop\/product\/foam-filter-block-for-flex-aquarium-kit\" rel=\"nofollow noopener\" target=\"_blank\"\u003eView this product on the Fluval website\u003c\/a\u003e\u003c\/p\u003e","brand":"Fluval","offers":[{"title":"Default Title","offer_id":55952397369666,"sku":"FLUVAL247","price":12.28,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/6676\/0120\/files\/flx10_4.jpg?v=1787217445","url":"https:\/\/www.peekapaw.com.au\/products\/fluval-flex-foam-insert-57l-123l","provider":"PeekAPaw Pet Supplies","version":"1.0","type":"link"}