Work as advertised, 2-day shipping.
Love these sponges! They are versatile, and can be used in many different filters. I use them in both my aquaclear filter as well as a generic hang on back. They can easily be cleaned out and are durable, lasting a really long time!
The fit my filters perfectly and work great.
This is an amazing sponge! I used it to optimize the filtration in my aquaclear filter. I am using an intake sponge for mechanical filtration, so I am using this sponge solely for biological filtration. It works great as a biological filter! You can tell because it quickly changes color without any debris in it, meaning it is has been colonized by bacteria.
Excellent product, shipping was fast, worked great with my hob filter