boxtechAquarium Filter Media, Ceramic Biological Filter Media for Marine and Freshwater Fish Tank, Two Pcs

Awesome

This filter media has been perfect to get the fine particles out of the water in my koi pond. I've been using it since July and clean it weekly.Now, I don't need to use more filter cotton for the aquarium, this is my first choice. High-quality products that work as you expect.It will last me quite a while before I need more. I cut the filter media to the size I needed to wrap around me pond filter. The pond was in rough condition & it helped remove the floating muck in the water, I spray the filter off every morning, it’s been almost a week & it’s till in good condition. I used elastics to secure it the first few days until I could some large zip ties, both work fine the zip ties hold it in place better. As you can see in the photos, it definitely helped clear the water up in just 12 hou, I can finally see my koi!

This product is very good. As soon as the express arrived, I had no choice but to take it back and open it. From the appearance, the package looks very good, it is very convenient to use, the price is very affordable, the appearance is very beautiful, the color is very good, I like it very much, the function is many, the product quality is very good, I like it very much

This product works well as far as I can tell. I'm using this along with several other types of bio media, so there is no way to tell exactly how well this houses the BB, I will be judging based on the porosity. I have a 180gal freshwater tank that uses a 40gal sump filtration system, I put the 2 bricks so they completely cover the outlet of the 2nd chamber of the sump and it still alows approximately 1000+ GPH of flow through the media, and by the looks and feel of this product I'd say it's doing a great job. I only gave it 4☆ because i feel it's a bit expensive.

The baby received it. It is the same as the seller described. It is softer, has good water permeability, no impurities, and good quality. I put it on when I came back, and I looked at the water that didn’t have the same kind of fluff before. The water was clean and very satisfied.