Great for improving your biological bacterial count in your aquariums. Common used in Canister Filters, Hang on Back filters and sumps.  The bio rings weight 1lb 2 oz or 500 grams.

Bio Rings

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Great for improving your biological bacterial count in your aquariums. Common used in Canister Filters, Hang on Back filters and sumps.  The bio rings weight 1lb 2 oz or 500 grams.

Customer Reviews

Based on 95 reviews
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M
M.G.
Works well

I have put these in all my HOB and canister filters seems to really be doing a good job and decent price

A
A.
Good amount, great for filtration!

My order arrived well packaged. I bought these to add to my Aquaclear 110 HOB because I decided not to use the charcoal insert. I have not added them yet, but expect them to work great and fit nicely!

M
M.M.
Good deal

Too many for my hobs. Bought smaller bags to use on 2 of my aquariums. That will work wonders. Rinsed. Soaked. Put in one hob loose while I wait. Definitely helping with the bioload.