Say Goodbye to Filter Socks — Meet the 4" High-Flow Flexible Filter Media CupAvailable at Reef Supplies Canada Ditch the hassle of rinsing dirty filter socks! The 4" High-Flow Flexible Filter Media Cup – Sea Foam White is your new reef tank essential. Crafted from 100% virgin BPA-free polypropylene, this one-piece, flexible design is now slotted for improved flow and maximum adaptability. Designed to replace standard 4" filter socks, this media cup gives you full control over your filtration—with none of the mess. Flexible, Fast & Foolproof Slotted for Higher Flow: Improved water circulation means better performance across all media types. Flexible Build: Slightly pliable to accommodate tight or uneven sock holders. Easy Drop-In Fit: Fits most 4" diameter round filter sock holders. Have a C-shaped or wider sock holder? Just add the optional Filter Media Cup Adapter. Your Filtration, Your Way Use with any media you choose—filter pads, floss, carbon, GFO, or biological media. For chemical media like GFO and carbon, simply use a media bag. When it’s time to clean, just swap out the media—no more rinsing dirty socks! Want a quieter system? Pair it with our reef-safe Filter Media Cup Silencer (sold separately). Specifications: Dimensions: 4" Diameter x 6" Height Material: 100% Virgin BPA-free Polypropylene (Tupperware-grade) Color: Sea Foam White Compatibility Notes: Fits most 4" round filter sock holders. Not compatible with Trigger Systems sumps that use oval-shaped sock holders. Adapter recommended for C-shaped or non-standard holders. For best results, rinse with vinegar and water before first use. Simplify your maintenance routine and upgrade your sump setup with the 4" High-Flow Flexible Filter Media Cup—available now at Reef Supplies Canada, your go-to destination for premium saltwater aquarium supplies.
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