05-06-2012, 02:13 PM
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I'm going to have to go against the grain here to 'say' that for what it's worth, I think bio-seed bacteria in a bottle has come of age, especially with Tetra, Seachem and API in the market. 10 years ago these products were admittedly less effective. The bacteria in a bottle today are much better and although resilient, there are distribution and sometimes storage challenges due to temperature.
I would say that whenever possible, use a bio-seed from another healthy tank (be it filter or substrate media), but failing that, a few dollars spent on nitrifying bacteria in a bottle can make a big difference.