08-20-2009, 01:43 PM
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Originally Posted by nomel
I'm sure your local store would let you buy or just give you some water...dump it in...bacteria.
I must point out that there is no beneficial nitrosomonas or nitrospira bacteria in water. These bacteria colonize surfaces where they then feed on ammonia/nitrite respectively and multiply through binary division if the food source warrants it.
Aside from that, using water from an existing tank is certainly going to add stuff you do not want in your tank...fish waste (urine, dissolved solid waste) and possibly pathogens and parasites. While adding the beneficial bacteria from an established tank (via wood, rocks, plants, filter media, substrate) is beneficial, adding these others things is not. If one quarantines fish and plants to keep stuff out, don't add water that contains the same stuff.
Considering the relatively inexpensive cost of a small bottle of Stability and how it prevents fish stress and saves them, it is money well spent.