About This

• 【Honeycomb Filtration】Our 4 inch filter sock adopts a 3D honeycomb structure, efficiently trapping fine debris, suspended solids and micro-impurities to improve water clarity for freshwater and saltwater aquariums. It is a compatible replacement for Hello Reef, for Waterbox, for Innovative Marine filter socks, fitting 4” holders, reef tanks and sump systems to support healthy coral and fish.
• 【Durable Filter Bags】Made of heavy-duty tear-resistant non-woven fabric, these aquarium filter bags boast high water permeability and long service life. The 4 inch filter sock resists clogging, keeping sump filters efficient. As replacements for for Waterbox and for Innovative Marine filter socks, it retains shape and filtration performance, cutting down maintenance times effectively.
• 【20-Pack Bulk Supply】This set comes with 20 pack 4 inch honeycomb filter socks, measuring 4” ring x 11.8” long. They fit standard sump holders, for Waterbox, for Innovative Marine and for Hello Reef filter sock setups perfectly. The bulk package ensures adequate replacement stock, supporting regular maintenance for hobbyists and professional users alike.
• 【Low-Maintenance Design】Replace these 4 inch filter socks every 2–4 weeks for optimal performance, avoiding debris buildup and keeping biological balance. They are easy to take out, rinse or discard, simplifying routine tank care. Compatible with saltwater and freshwater aquarium setups, they help maintain efficient sump filtration and healthy aquatic life.
• 【Reliable After-Sale Support】We provide reliable support for our aquarium filter socks and prioritize your satisfaction. If you have inquiries about 4 inch filter sock use, compatibility with for Hello Reef, for Waterbox setups or sump filter optimization, our aquatic experts are ready to assist you with prompt and professional help.