Bio-Glass 1 liter
one of the best
1.last very long time.
2. comparing with brand media, this one gets quality, but much cheaper.
3. perfect for canisters come without bio-media.
October 23, 2014
Good product great price
Went with the one liter and three liter size. Great product for canister filter and I have some in freshwater sump as well. Great price as well on the product and as always Foster and Smith were lightning fast with shipping.
March 12, 2014
Let me tell you this... Those bio rings are very porous.. Beneficial bacteria will start to grow on them very quickly ! Just try them and you won't be disappointed!! I recommend buying 2 liters if you will keep it in an external canister filter.
December 23, 2013
Very Porous and Useful Product
Azoo Bio-Glass Rings are much more porous than the many bio-rings that I have tried. This means that they can harbor more of the beneficial bacteria that is so important to successful aquarium management. I ordered the 1 liter size which comes packed in a useful coarse mesh bag. This bag is not mentioned in the catalog description. I use these bio- rings in a large canister filter, but they will work in most other types of filters. Give it time for the beneficial bacteria to get established in the rings.
October 31, 2013