{"product_id":"hob-filter-water-diffuser-baffle-aquaarc-fits-all-aquarium-filters-ideal-for-betta-fish-and-shrimp-perfect-for-all-tank-free-shipping","title":"Universal Aquarium Filter Baffle – HOB Hang On Back Water Flow Diffuser – Betta Fish \u0026 Shrimp Safe – Fits Most Aquarium Filters","description":"\u003cp\u003eTurn harsh filter output into a calm, controlled flow with this HOB Filter Water Diffuser Baffle. Designed to sit directly under your hang-on-back filter, it slows and diffuses water before it enters the tank, creating a more natural and stress-free environment for fish and shrimp. Made from aquarium-safe plastic and compatible with virtually all HOB filters, it’s an easy, tool-free upgrade that makes an immediate difference.\u003cbr\u003ePerfect for betta tanks, shrimp tanks, fry tanks, and planted aquariums where strong currents can cause stress, exhaustion, or debris disturbance. For even gentler flow, optional white filter floss can be added inside the diffuser to further slow water without restricting filtration.\u003c\/p\u003e\n\u003cp\u003eAvailable Sizes:\u003cbr\u003e4\", 5\", 6\", and 8\" to fit a wide range of aquarium filters and tank setups.\u003c\/p\u003e\n\u003cp\u003eBenefits:\u003cbr\u003eSoftens and diffuses strong filter output\u003cbr\u003eReduces surface turbulence and splashing\u003cbr\u003eCreates calmer water flow for bettas, shrimp, fry, and nano fish\u003cbr\u003eHelps prevent fish stress and fin damage\u003cbr\u003eAquarium-safe plastic – will not leach chemicals\u003cbr\u003eFits ALL hang-on-back (HOB) aquarium filters\u003cbr\u003eOptional filter floss support for extra flow control\u003cbr\u003eSimple drop-in installation, no tools required\u003cbr\u003eGreat for planted tanks and low-flow setups\u003c\/p\u003e\n\u003cp\u003eFree Shipping included\u003c\/p\u003e\n\u003cp\u003e*Compatible with but not associated to Rolf C Hagen Ltd.*\u003c\/p\u003e","brand":"Walter Lids","offers":[{"title":"SMALL 4\"","offer_id":47422421369019,"sku":null,"price":13.0,"currency_code":"USD","in_stock":true},{"title":"MEDIUM 5\"","offer_id":47422421401787,"sku":null,"price":17.0,"currency_code":"USD","in_stock":true},{"title":"LARGE 6\"","offer_id":47422424678587,"sku":null,"price":23.0,"currency_code":"USD","in_stock":true},{"title":"XXL 8\"","offer_id":47422424711355,"sku":null,"price":25.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/6276\/9851\/files\/ChatGPTImageJan30_2026at11_51_38AM.jpg?v=1770158827","url":"https:\/\/walterlids.com\/products\/hob-filter-water-diffuser-baffle-aquaarc-fits-all-aquarium-filters-ideal-for-betta-fish-and-shrimp-perfect-for-all-tank-free-shipping","provider":"Walter Lids","version":"1.0","type":"link"}