What's in your canister filter?

Porous ceramic medias are the best for submerged uses. Bioballs simply have much less surface area per volume.

I have taken a close look at Marineland's ceramic media and it does not seem porous at all. If indeed it is porous then it does not seem porous enough at all and I would simply not use it.
 
The Marineland representative that came to my work said it was supposed to be porous, but agreed with me that he could not see it at all either.
 
southpaw said:
If you enlarge the pic it says right on the box "Provide porous surface area for support of biological filtration"
Click to expand...


I cannot enlarge the pic for that particular prodcut i tried before posting...however you say it states "provide", not "provides" which it could be saying that you should provide porous surfaces, it doesn't specify that the product itself "provides" porous surfaces.
 
You want lots of surface area for a biological filter. I'm not sure the specific material really matters as long as the surface is large. The biologicals form a thin film on the surface so the more surface, the more biofilter.
 
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