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  1. Replies
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    Bio-Filtration Mystery ... SOLVED

    Thanks to Mike and JR for making me really think the situation through.

    What we found was that there was nitrification going on, just not enough of it; and the pH was dropping constantly. So,...
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    Thank you Mike. Tap water: 15ppm of NO3 (vs...

    Thank you Mike.

    Tap water: 15ppm of NO3 (vs 25ppm in the tank water).

    I thought that ammonia bound with ClorAm-X was still available to nitrifying bacteria, but I will leave around 0.5ppm of...
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    Thank you Mike: nitrates! Why did I not think of...

    Thank you Mike: nitrates! Why did I not think of that :(

    NO3 25ppm

    So the filter has cycled.

    To JasPR:
    1) no seeding (never had to do this in the past)
    anyway added today the flush...
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    4-5 inches x 40

    4-5 inches x 40
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    Bio-Filtration Mystery ...

    What can cause a tank/fiter system to never cycle?

    * 800 gal. tank
    * EazyPod filter
    * 1700 gph pump
    * 25W UV
    * venturi return

    * GH 100ppm
    * KH 70ppm
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    Tosai grow

    Lam,

    In Niigata tosai are packed very tight in greenhouse ponds for the Winter, so tight that you cannot see the water in the pond for the fish swimming at the surface. They typically stay in...
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    Best Health Pratices ...

    As Dick and others have said, "education, education, education,...and more education" will go a long way to improve KHV and other koi health issues a great deal. When there are AKCA certified and...
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    Got 65 miles/hour winds here around Portland...

    Got 65 miles/hour winds here around Portland Oregon. Small branches, leaves and pine needles flying sidways. All my house's gutters got clogged in no time. Many folks are still without power now....
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    Filter Aeration

    Steve,

    Aeration of bio-filters is too often taken as "oxygenation" for the nitrifiers. It is that, but even more importantly, violent aeration keeps the filter clean and increases the chance of...
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    All Japan ZNA Photos

    By Tony Prew
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    Cupro-Nickel - Thanks for the responses ...

    So my suspitions were justified: under acid condition cupro-nickel will release copper in the water (somewhat less than copper alone). Given the very low copper tolerance of koi, I would say that it...
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    Cupro-Nickel - Ist it safe?

    A Teledyne-Laars dealer recently said that their standard pool heaters now come with a cupro-nickel heat exchanger and therefore are safe for heating koi ponds without any modification.

    I did...
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    Birdman, When kH readings overtake gH readings...

    Birdman,

    When kH readings overtake gH readings there is a shortage of positive ions in the water (Ca++, MG++). That leaves the way open for the bi-carbonates to raise the pH.

    You need to add...
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    High pH control

    Adding baking soda (sodium bi-carbonate) is not a solution.

    A small amount of calcium chloride (CaCl) will stop the pH from going too high by precipitating calcium carbonates out of the water as...
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    Bern, Your "exhibition" point is right on:...

    Bern,

    Your "exhibition" point is right on: bags do take something away.

    However, take a look at how the Japanese use the bags:
    * only the smaller size koi are in bags (the larger ones in...
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    Steve, I thank you and all for a very...

    Steve,

    I thank you and all for a very balanced discussion about these bags.

    The Konishi show bag, although crystal clear, are soft and plyable, and 20mil thick. You can bang a bag around with...
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    Bag Size vs. Koi Size

    Mike,

    The Japanese are using this rule:

    Small Bag Max koi size 25cm
    Medium Bag Max koi size 45cm
    Large Bag Max koi size 70cm

    Given that large koi deserve to be...
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    Carolyn, You are quite correct: a lot more of...

    Carolyn,

    You are quite correct: a lot more of the koi may be seen in the bag than would be is a show tank.

    My guess is that judges must be more concious in applying the rules. We cannot know...
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    ZNA Kobe Show with Bags

    Here are a couple of pictures from the Kobe show where the Konishi bags were used.

    Steve is correct: the koi are not taken out of the bags for benching, hobbyists measure the koi before bagging....
  20. Thread: Koi Characters

    by Arthur
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    Koi Character - I have one with plenty ...

    Just after my pond was completed some 8 years ago, Tony Prew gave me a male Asagi of good size (maybe around 20") and age: 9 years old.

    At the beginning, and as expected of a new koi in the pond...
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    Taking koi photos

    We use a square 4'x4' fiberglass tank 16" deep with around 10" of water. The size of the tank allows fish to relax very quickly. The shape, as others have said, encourages the fish to swim in a...
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    Jim, You are probably thinking of sea water...

    Jim,

    You are probably thinking of sea water (salted) not freezing as fast as fresh water (lake/pool).

    The fact is that there is no salt in water vapor. Icing above above water occurs in the...
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    Static K-1 in the last chamber ...

    Mike,

    Moving K-1 generates a lot of fines. Having static K-1 in the last chamber removes these fines and reduces DOCs.
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    Totally agree with you Steve, but ...

    Lucky you, not everybody can afford an automatic sieve system http://www.koi-bito.com/forum/images/icons/icon9.gif

    I certainly cannot http://www.koi-bito.com/forum/images/icons/icon8.gif
    ...
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    Ecological Labs' products are "legit". This...

    Ecological Labs' products are "legit".

    This said, as Russ pointed out, they do not perform miracles :-(

    Do read the label small print carefully. They are consequences that you must be aware...
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