ALEGI 6 lbs Aquarium Ceramic Bio Filter Media Sphere for Freshwater Aquarium and Marine Fish Tank Sump, Canister Filter, Koi Ponds

They are, as advertised, round. And they're ceramic. They work. Not sure what else to say here. How yall doin? Have a nice week? Hope so. Anyway, if you're looking for filter media...yeah, these are that. Not much else to talk about...they're ceramic beads. Can't really break, or disappoint otherwise.

These are great no matter what filter type you have, weather it’s a canister or a hang on back filter I have these in both. The more space you have for bacteria the better. They have been in my tanks for a few months now and all of my fish are healthy with good water parameters

This is a good deal. I rinsed the balls before use to get the loose sand/dust off. They have no smell to them so I am pretty confident that they will be safe for my fish.

Helped so much to reduce the ammonia and nitrite

Works

As advertised. Thanks

Does the job!

I put these in my filter they work so well would recommend these

Funciona muy bien en mi acuario hasta el momento, en conjunto con las fibras ha mantenido el agua cristalina

Added to my FX4/FX6 filters inside bio bags. You can fit a great deal of them in there and the round balls is so much better than the stuff they came with.

El producto llego incompleto, falto la bolsa de malla

Good quality and price :)

Very nice bio media and really nice bags for the media. Because it's small media it's easy to pack a lot in, I managed to fit just shy of 2lbs in my aquaclear 70Haven't had for long term yet but hoping it'll hold up nicely!