Turn 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. Perfect 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.
Available Sizes: 4", 5", 6", and 8" to fit a wide range of aquarium filters and tank setups.
Benefits: Softens and diffuses strong filter output Reduces surface turbulence and splashing Creates calmer water flow for bettas, shrimp, fry, and nano fish Helps prevent fish stress and fin damage Aquarium-safe plastic – will not leach chemicals Fits ALL hang-on-back (HOB) aquarium filters Optional filter floss support for extra flow control Simple drop-in installation, no tools required Great for planted tanks and low-flow setups
Free Shipping included
*Compatible with but not associated to Rolf C Hagen Ltd.*
