Review on Coralife 6-Pack of 2 BioCube 🐠 Filter Cartridge for Aquarium: Ensuring Optimal Water Filtration by Christina Ochoa

Great deal... And cool filters!. I'm pretty sure you'll need it if you buy because you don't have a choice... But at least it's a pretty good option if you're out of options lol. I can use these filters multiple times. This dirty filter can be easily washed in the sink and used again and again. I usually only need to buy one of these packs every now and then. Amazing that it lasts so long and I don't have to think about buying new filters for my saltwater aquarium. My happy fish stay happy.