02-07-2013, 02:29 PM
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Originally Posted by Keaze
Out of curiosity, you mentioned changing the filter is not that big of a deal because the beneficial bacteria is everywhere once it's established (which really surprises me). But is that also true for small aquariums such as my 10 gallons tank?
There are some that have been conditioned to think that the filter is the only place bacteria colonies grow. Some of this is fostered by the vast array of filter bio-media products available... and don't get me wrong, the filter is a great place because there's a lot going on in there with organic nitrogenous decomposition, dissolving organics and the constant flow of water delivering food and such.
But as the new tank becomes established, there's also a micro climate eco-system developing and to a large degree, this happens in the substrate with different organisms at different levels. Even if rinsed and reused over and over again, eventually the cartridge in the cartridge filter just has to be replaced... And when it is replaced, the tank handles the change with no noticeable upset because the system is now established and can handle it.
Note: It takes about 6 months of operation w/o issues for a tank to be considered established.