Wonderland22 Wonderland22
  • Not too shy to talk
  • Not too shy to talk
  • Joined: 23/10/2011 9:58
  • From Australia
  • Group: Registered Users Basic Membership
  • Posts: 37
  • Posted on: 3/8/2012 6:51
Filter bacteria #1
How long can filter bacteria survive if the filter is switched off?
TetraLinz TetraLinz
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  • Joined: 30/5/2007 8:50
  • From Tyne & Wear
  • Group: Registered Users FK Supporter
  • Posts: 4623
  • Posted on: 3/8/2012 8:06
Re: Filter bacteria #2
Technically, you'll start to get a small amount of die-back after 20min, but realistically, as long as the filter can be turned on within an hour, you should be fine.

After an hour, you may start to notice an ammonia/nitrite spike so I'd advise to keep an eye on ammonia and nitrite levels for a few days, to ensure they remain at 0ppm, and be prepared to carry out water changes if they start to rise.

If you've experienced a power cut, or are transferring the fish and their tank/filter to another destination for example, you can keep the bacteria alive by putting the filter/media in a bucket of tank water and use a battery-powered airpump to keep the water oxygenated.
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