I have been using my own carrier since I have been planting aquariums. I don't want carbon in factory filters. I combine these first with a sponge, then with this (cut to size), then with a polishing cloth in my HOB filters. I can rinse it several times in a bucket of dirty water before replacing it with a new one. Big savings and a very good product!
KEDSUM 330GPH Ultra Quiet Submersible Pump With High Lift And Grounded Power Cord - Ideal For Fish Tanks, Ponds, Aquariums, Statuary, Hydroponics - Includes 3 Nozzles And 1500L/H Water Flow
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