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fish-in cycling

  1. Fish-in cycling: what level of ammonia/nitrites is toxic? .25 OK?

    Beginner Freshwater Aquarium
    I'm on day 26 of fish-in cycling for my 46-gallon. There are 6 comet goldfish in there currently. I have been "seeding" the tank with media and decor from my cycled tank. I have been keeping the ammonia and nitrites in check with large water changes. Is .25 OK until the tank is cycled? My fish...
  2. (UK) Fish-In-Cycle 240L 4ft Tank.

    Beginner Freshwater Aquarium
    Starting a new Tank from fresh as I've recently upgraded from a much smaller Tank, and as I do not have the Filter media from the old Filtration unit, I have no way of obtaining my old culture (Which isn't a problem as I was quite fond of starting from scratch if I am honest). I've been keeping...
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