Bulk Bio Balls 100 Count Aquarium Filter Accessory, 0.75 Cubic Feet

I use these bio balls in my Aquaponics swirl filter; because I have a drain on the bottom and don't want it to get clogged up with bio balls, I needed balls that float- these are perfect! The bacteria adheres quickly to them allowing the ammonia/nitrite process to begin; and because they are light they can gently bounce against one another knocking down dead bacteria on the balls to the bottom of the filter which is later drained out. I will be purchasing more of these!

They are bio balls. I got them for a filter. They work. The item pictured here is exactly what you get. :)

These are a waste of money. I bought 500 of these and they take up very little space. If you want quality filter media that has significantly more surface area, then buy matala pads. These balls are junk and not worth the cost.

nothing bad about this product they are great!!

I really enjoy this product. I was having problems with my sponge filter in my 26 gallon salt water aquarium, so I decided to order the bio balls and I have been really satisfied. They also came in fairly quickly.

These exceeded our application. They have a great amount of surface area and do their job very well. They are easy to get out and rinse off well when you go to clean them. These are better than some I have used in the past where you could not get some surfaces clean.

I was told by a friend that these were the only way to go and he was right! My tank stays cleaner longer, and I have less monthly cleaning! Delivery was prompt, and product arrived as promised (all 100 balls were included).

Going to take out the sponge material in my canister filters and fill the space with these bio balls. I like the smaller size. They will fit in the canisters better.