{"product_id":"lees-original-undergravel-filter-4","title":"Lees Original Undergravel Filter","description":"\u003cp\u003eLees Undergravel Filter is the key to providing a strong biological filtration system. Undergravel filters utilize your tanks gravel substrate as a filtering surface area while providing oxygen to help aerate your aquarium water.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eProvides biological filtration and aeration to aquarium\u003c\/li\u003e\n\u003cli\u003eIncludes airline diffusers, carbon cartridges, Discard-A-Stone and fish-saver feature\u003c\/li\u003e\n\u003cli\u003eFor use in fresh and saltwater aquariums\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePlaced on the bottom surface of the aquarium, the filter plates utilize the gravel bed as a source of surface area for bio-filtration and provide oxygen by recirculating the water down through the media and up through the uplift tubes.\u003cbr\u003e\u003cbr\u003eThe advanced design allows separate plate installation and features optional flow-thru setup, which can be used with a powerhead. Adjustable 1\" uplift tubes provide superior water circulation. The filter is made of special, premium quality plastic which resists splitting and cracking.\u003cbr\u003e\u003cbr\u003eNote: Must be attached to an air pump or powerhead (sold separately).\u003c\/p\u003e","brand":"T-Rex Pet Shop","offers":[{"title":"(55 Gallons):(55 Gallons)","offer_id":48325412323548,"sku":"13245","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0821\/9502\/2044\/files\/790f7788-780563_df09eb4c72524a238e1493b465c10d03_mv2.jpg?v=1774236824","url":"https:\/\/www.t-rexpets.com\/products\/lees-original-undergravel-filter-4","provider":"T-Rex Pet Shop","version":"1.0","type":"link"}