Fluval AC20 Flow Deflector – Betta Friendly Mod

Fluval AC20 Flow Deflector – Betta Friendly Mod (PETG)This custom flow deflector is designed specifically for the Fluval AC20 hang-on-back filter and is optimized for low-flow aquariums, such as betta tanks (bettari) and other small or calm-water setups.The goal of this mod is simple:➡️ reduce surface turbulence,➡️ spread the outflow more evenly,➡️ protect long-finned fish like Betta splendens from excessive current.Key FeaturesGentle flow diffusionThe water outlet is redirected and diffused through multiple side and front holes, reducing direct current while maintaining good circulation.No bottom holesThe bottom section is solid to prevent downward jets and substrate disturbance.Flow starts gradually from 1.5 mm up to 3 mm holes, distributed laterally and frontally.Designed for betta aquariumsIdeal for long-finned fish that struggle with strong currents. Helps create a calmer, more natural environment.Plug & play fitDesigned to mount directly onto the Fluval AC20 outlet without perman