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Review on 🐟 Huijukon Bio Sponge Filter: Premium Aquarium Filter Sponge for Betta, Fry, Shrimp, Breeder; Ideal for Freshwater and Saltwater Fish Tank by Patty Yenbamroong

Revainrating 5 out of 5

essential for aquariums

I have literally 7 of these and will probably add more. Although I have other forms of filtration in my fish/axolotl tanks, I prefer sponge filters because they keep the tank clean. They also move easily to fit the QT tank. I also only recently discovered that I can put crushed coral in containers. I usually have lava in it, but I also have low pH from the tap, but my canister filters don't have room for crushed coral, so they save space too.

Pros
  • Free for educational purposes
Cons
  • Lots of stuff