03-26-2011, 04:36 PM
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Iamgray is correct. But in case you are not aware of it, there are some precautions. The decor (wood, rocks, ornaments, plants, whatever) must be kept wet; if they dry the bacteria will be killed. Don't wash them (probably obvious, but doesn't hurt to say the obvious sometimes). And once in the new tank, they will need a source of ammonia or again the bacteria will die. And make sure you dechlorinate the water in the new tank before adding them.
The easiest way I have found is to have a few fish in the new tank. Once it is running, heater and filter working, add the bacteria-laden items and a fish or two. If you have live plants, even better. With live bacteria coming in, I would not mess with adding pure ammonia or dead shrimp, or similar. This can cause more problems when it is not necessary. Without any "seeding" these methods are fine.
Another source of "seeding" is a live bacteria supplement. Seachem's Stability and Tetra's SafeStart are both good, they are 100% live nitrifying bacteria. They do not miraculously "cycle" a new tank, they simply start the bacteria colonies quicker, same as adding bacteria from an established tank using items, filters, gravel, etc.