I’m 99.9% certain you didn’t say filter media bag.
My point is that this is likely a product that you won’t even give a passing thought to.
That is unless you have ever had to clean Purigen or activated carbon out of your aquarium because your media bag broke.
These bags keep dirt from activated carbon dirt and impurities away from water during filtration.
Yep, choosing a high-quality media bag is important.
Luckily for you, we tested the most popular media bags on the market, so you don’t have to.
If you want to know everything there is about this boring but useful product, then you need to keep reading!