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Fishlady Fishlady
  • Tropical Moderator
  • Tropical Moderator
  • Joined: 6/7/2010 18:26
  • From Worcestershire
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  • Posts: 13086
  • Posted on: 23/8 10:52
Re: Why can't I prime my new canister filter? #11
There's no set timescale as each tank is different, but typically it takes 2-3 weeks for nitrite to appear :)