Can biomedia be submersed?
Does it harm the media-Is there a downfall to it being submersed vs. not submersed?
Does it harm the media-Is there a downfall to it being submersed vs. not submersed?
Tropical Dude;3058066; said:6,332 posts and you didn't know how biomedia functioned? But yeah, there is sense in this question. Not all biomedia is the same.
There is canister media (e.g. porous ceramic rings and balls, Substrat, Matrix, Cell-Pore, and Bio-Max just to name a few). Canister media is designed to house not only bacteria on it's external structure but internally as well. That means it has an extremly high surface area and can normally house a lot of bacteria in a small volume of media.
Then there is wet/dry (reffered to as WD from here out) which is designed to house most of the bacteria externally, be relatively cheap, and is normally large and won't easily compact or clog. There is not really that much when it comes to WD media, the most common is bio-balls which come in all shapes, sizes, and designs and not all are equal. Then there are scrubbies which are by far supperior to bio-balls and are still cheap and there is also Matala and Japanese Mat filter media.
Some canister medias such as the Cell-Pore (ReefresH20 brand) balls are wonderful in sumps, but at $30-$50 for a gallon the price is prohibitve. A small amount of canister media can make a great addition to a sump, but filling the whole thing with it is impractical.
Basically, bio-balls are great in sumps where space is not a concern, but with canister media it's all about a ton of surface area in the least amount of space possible. Given, bio-balls and scrubbies are best left to fill WD's and Matrix and Substrat are better suited to canisters.