Provides excellent biological filtration. Great to have more then one in a filter especially if you plan to setup a new tank, because it is super easy to move one over to a new tank to provide a very quick cycle. They never need replaced, and do not require a lot of cleaning if any.

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Stock the tank you have, not the tank you plan to have. Always have and use patience.
- 29g FW - Community
- 55g SW - Blue Watchman Goby, Royal Gramma, 6-Line Wrasse, 2 Ocellaris Clownfish, and various corals and inverts
For those of you who want a SW tank and never have had one before or just starting out, read this blog entry from my blog on AC, it will give you a place to start.

very very good have it in both of my aquaclears :)

Cheap, and works good enough, I guess.. But you get what you pay for, they say, so I wouldn't mind paying more for sturdier, more re-usable stuff like Efi-substrat..

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75g - 20 cardinals : 7 panda cory : 5 Julii cory : 9 zebra danios : 1 CAE : 2 SAE : 2 yo-yos : 1 BN
25g: 5 long-finned zebra danios

WORKS

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Works very well and is also very easy to clean.

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You can't play nice with people who don't play by the rules!

Works great for me. I run it in my Whisper filter.

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55g - 1 oscar and 1 red zebra
30g(planted) - 3 Trilineatus cories, 3 peppered cories, 1 female betta, 2 gold rasboras, and snails.
50g - 4 lethrinops intermedius
46g Hex - 2 black neon tetras, 3 bloodfin tetras, 3 blue tetras, 2 snakeskin gouramis, 3 Agassizi corys, 2 von rio tetras ,and 1 pleco

I started using this in one of my AC50s about two months ago.

Easy to use and to clean

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If you take your time to do the research FIRST, you can successfully set-up and keep ANY type of aquarium with ease.
"Not using a quarantine tank is like playing Russian roulette. Nobody wins the game, some people just get to play longer than others." - Anthony Calfo
Fishless Cycle Cycling with Fish http://www.aquaticcommunity.com/aquariumforum/showthread.php?t=76398”] Marine Aquarium Info [/URL] [URL="http://saltwater.aquaticcommunity.com/"]

They do a very good job of keeping beneficial bacteria going. They do break easy so be careful, they are glass...

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Google is your friend. Use it!!!

Love these! An easy way to increase bioload capacity.

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130g: 6 Angelfish, 2 Roseline Sharks, 5 Kuhli Loaches, 1 Otocinslus, 1 Corydora
I've noticed that people HATE it when you point out how stupid they are, so now I try to do it politely.

I began using Biomax when I first started up my AC30 three months ago. Since then, I purchased more and added it to the small amount that came with the filter - it is now stuffed quite full of Biomax. The older units certainly darken with age which I assume is due to the growth of the bio load. Be sure to rinse these well prior to first using them. A portion of them get powdered like cereal in shipping. I haven't seen any reason to re-clean or replace them yet, nor do I expect to. My Eheim canister filter came with biofiltration in the form of pea-sized spheres. I suspect that shape will lead to denser packing of the media and less damage from shipping (no edges). Most likely, I will buy some Fluval product next just so I can see all three types in action.

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The family fish***The family tank***balt's Blog***Reviews ¸.·´¯`·.¸¸.·´¯`·.¸¸.·´¯`·.¸>

I mix these with Fluval Bio-max rings in smaller hob's. Since they are smaller, they will help fill voids when using with bigger media rings.