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Cardinal Tetras and KH

Discussion in 'Fish for Planted Tanks' started by fjf888, Dec 7, 2007.

  1. fjf888

    fjf888 Guru Class Expert

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    I read the prior thread about Cardinal Tetras dying. I am trying to establish a large school in my planted tank. What is the maximum recommended KH for them to thrive. My tap water has a fairly wide range of KH 3-6. Currently it is coming out of the tap 6 KH, I am concerned that may be too high.

    I have also had trouble keeping them alive in quarantine, but that I believe was because my heater gave out and the temperature went to 69F. The remaining survivors contracted Ich. Previous posts seemed to reference that temp was critical. I throw hornwort in my quarantine tank as well, it seems to have the effect of increasing the PH to nearly 8 from about 7.5 because of all the CO2 is drained out, based on prior threads I believe that is not a factor. All other parameters are fine Ammonia, 0, NO2, 0, NO3, 10-15.

    Any advice greatly appreciated
     
    #1 fjf888, Dec 7, 2007
  2. Tom Barr

    Tom Barr Founder
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    I've never had an issue relating to KH and cardinals.
    As long as you are good about acclimation and drip them, then they should be fine.
    Several folks I know have the largest ones I've ever seen and they are 3-4 years old now and at a KH of 9.

    The large groups in one client's are at 5.

    Regards,
    Tom Barr
     
    #2 Tom Barr, Dec 7, 2007
  3. Russ

    Russ Guest

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    I have kept a group of 30 at Kh 5 for a year and they have done very well.

    -Russ
     
    #3 Russ, Dec 14, 2007
  4. Tom Barr

    Tom Barr Founder
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    Alan's KH is 8-9 and he's got the largest cardinals I've ever seen and the oldest.
    The key was slow acclimatization.

    Regards,
    Tom Barr
     
    #4 Tom Barr, Dec 15, 2007
  5. VaughnH

    VaughnH Lifetime Charter Member
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    How slow is slow? An hour, a day, a week...? My guess is that no more than a couple of hours is very good.
     
    #5 VaughnH, Dec 15, 2007
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