4" Filter Media Cup / Floss Holder

Replace your filter socks with a smarter, more customisable aquarium filter media holder. Our 4" Filter Media Cup is engineered for larger sump holes, giving you the freedom to choose the ideal filtration media – be it filter floss, bio media or your preferred option – to maintain optimal water quality and enhance your aquascape. This cup is designed specifically for use with Aqua One Filter Sock systems and is compatible with AquaOne ReefSys 180 / 255 / 326. ✨ Features • Perfect Fit – Tailored for larger sump holes and designed for Aqua One Filter Sock systems • Extra Capacity – 103mm height provides increased media volume for effective filtration • Customisable Filtration – Use filter floss, bio media or your preferred media for a tailored aquascape accessory • Hassle-Free Maintenance – Easy to clean and replace – no more messy filter socks • Aquarium-Safe – 3D printed with durable PETG, ensuring safety for all aquatic inhabitants 📏 Dimensions • • Height: 10.3 cm (4.06 in) ✔️ Compatibility • AquaOne ReefSys 180 / 255 / 326 📐Sizes are listed in centimeters with inch conversions for reference. Looking for a different size or color? Click "Custom Order" or send us a message. We’re happy to help! We can even create fully custom designs tailored to your scape. This product is expertly 3D-printed using high-quality PETG filament (Polyethylene Terephthalate Glycol-modified), a strong, durable and aquarium-safe plastic ideal for aquatic environments. The design is a Scapefin original.