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  1. #1
    Turquoise Discus
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    Adding fish to a cycled tank

    Hi guys,

    I've got the 6ft tank cycling with ammonia to build up the bacteria in the filter. I'm confused as to what to do next. I know I should quarantine everything before it goes in, and I'll get a 2 ft tank as a quarantine tank. I read that all of the tankmates should go in before the discus.

    My question is this: if the bacteria need ammonia to stay alive, I can't add ammonia once I put any fish in, and I put in the smaller fish first (which produce less waste), how do I get the benefit of cycling the filter first, and prevent another cycle when the discus go in? I'm assuming that if the bacteria aren't being fed by the fish waste of all of the fish I want to get, that the bacteria die off. If this is right, how does the whole thing work?

    Or do I trust that xtreme (for example, if I can talk them into it) have quarantined them all sufficiently first, and throw them all in together, then use the quarantine tank for anything that may go in later?

    Advice would be much appreciated guys, as I'm not getting my head around this one,
    DiscusEden

  2. #2
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    If you use supermarket ammonia not pure ammonia it won't cycle and just become poisonious .It takes roughly 2-3 weeks to fishless cycle a tank with pure ammonia.
    "If it isn't a wild its way too mild ! "

  3. #3
    Turquoise Discus
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    Thanks for the quick response taksan!

    Yes, I got that information from Ladyred, and found a chemical company that sold me pure (25%) ammonia - no other chemicals, detergent, etc, and it does not froth when shaken. I'm sure I've got the right stuff. But thanks for the warning.

    I was expecting 6- 8 weeks to cycle!

    Any suggestions on how to go about adding fish once it's done?

  4. #4
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    Quote Originally Posted by DiscusEden

    Any suggestions on how to go about adding fish once it's done?
    Fish tend to be slippery ..... I usualy use a net.
    "If it isn't a wild its way too mild ! "

  5. #5
    Turquoise Discus
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    Anything helpful?

  6. #6
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    once its fully cycled ..... and your happy with the water ....just put them in a few each day but not too long.
    "If it isn't a wild its way too mild ! "

  7. #7
    SnakeSkin Discus
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    u will have to add fish slowly, dont just buy heaps and put them all in or u will overload ur bio system.
    i know it's hard to quarantine, but if u get a disease from one fish then it effects all ur fish, u'll be sorry
    but saying that i have added fish without quarantine, just the risk u take, but thats up to u ?
    i would add a few tetra's and bn's first "after it's cycled"
    and just slowly add fish every week or two.
    just did a quick google and came up with this HTH
    Code:
    http://www.algone.com/cycle.php
    source :
    Code:
    http://www.google.com.au/search?hl=en&q=how+does+cycling+an+aquarium+work+&btnG=Google+Search&meta=

  8. #8
    Turquoise Discus
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    Thanks guys.

    Just so I'm clear taksan, what you're saying is that: when I have the tank cycled so it's converting 5ppm ammonia in 24 hours, as long as I don't take more than a week to add the fish, the bacteria levels won't drop in the filters below what is needed to convert a full bioload for the tank?

    So I quarantine them in seperate tanks prior to putting them in? Only problem is, I'm still left with only 2 tanks. I might need to discuss their quarantine procedures with the people I'm buying from and hope for the best maybe?

    Nice summary in the link fish_r. Much appreciated.

    Thanks again guys!

  9. #9
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    Quote Originally Posted by DiscusEden
    Thanks guys.

    Just so I'm clear taksan, what you're saying is that: when I have the tank cycled so it's converting 5ppm ammonia in 24 hours, as long as I don't take more than a week to add the fish, the bacteria levels won't drop in the filters below what is needed to convert a full bioload for the tank?



    Thanks again guys!
    Yep get at least 50-60% of your fish load in within a week of stopping ammonia. Don't forget to do 2 x 50% WC's just before adding the fish to drop the nitrates down to less then 5ppm.
    "If it isn't a wild its way too mild ! "

  10. #10
    Turquoise Discus
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    Thanks taksan, I knew you had all the answers. And I'll go buy a net.
    Thanks again!

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