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  • Results 1 to 7 of 7

    Thread: Should I perform a water change?

    1. #1
      Mike303 is offline Member
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      Should I perform a water change?

      Hi all, Iíve just tested the water and it looks good:
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      My question is if the water looks good should I do a WC or leave it alone? Usually I perform a WC every Sunday? If itís not broken donít fix it or keep up the routine to have good water?

      Happy Sunday, thanks!

    2. #2
      cvostmyer is offline Member
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      These are just 4 data points about your water quality.

      PH - Not out of the range for Koi. Is it stable?
      Ammonia - 0ppm: your biological filter is balanced. Or this is a new pond that has not cycled yet.
      Nitrite - 0ppm: your biological filter is balanced. Or this is a new pond that has not cycled yet.
      Nitrate - 0ppm: This could be a new pond that has not cycled yet. If you are using a standard bio filtration this number can be used as a marker for water changes. If you have plants in your pond or use Anoxic filters it is not.

      We don't know the size of your pond, the fish load, or how much you are feeding, so it is hard to tell what else could be building up in your water. With more information we may be able to give suggestions on how much water to change and when, but if you have a good water supply, the fish will always like fresher rather then stale water.

      Just my 2 cents.

    3. #3
      Mike303 is offline Member
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      Iíve built the pond in april, a small one ~350 gallon just to get the hang of it and to see if it is for me the pond life, this being my first pond. I have 1 koi, about 6-7 inches and 10 goldfish between 3-6 inches. I feed once a day, sometimes twice. I do have water lilies, water lettuce, monkey plant and horsetail. I use a pressurized canister filter for filtration that discharge in a 3 feet waterfall. I am planning for next year to build a ~3000 gallon proper koi pond with BD and TPR.

      Thanks
      Last edited by Mike303; 08-01-2021 at 02:52 PM.

    4. #4
      cvostmyer is offline Member
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      Do you know how much you are giving with each feeding? Measure out some food by weight if you have a food scale, then measure how much is left over after feeding. That will give you an estimate of how much waist is being processed.

      I wouldn't use the nitrate level as an indicator for doing a water change as your plants will keep the level down. I'd keep to a regular water change cycle and vary the amount you change by the amount of feeding you are doing. If you have a skimmer going, you can shut it down for a 10-15 minutes and see what collects on the surface. If you get a lot of foam from the waterfall or a visible sheen forming you may want to increase the amount you exchange.

      How much per week have you been doing?

      Again, just my 2 cents based on the information provided.

    5. #5
      Mike303 is offline Member
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      I do get some foam around the waterfall forming on Friday or Saturday ( I do a ~15% WC on Sunday). I have made a feeding ring and I use that. I just eyeball how much I feed but if they don’t finish it in 10 minutes I scoop it out. I think I will keep it up with the WC.

      Thanks

    6. #6
      icu2's Avatar
      icu2 is offline Administrator ~ WWKC Treasurer
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      I think keeping up the routine of water changes is a good idea.

      Have you ever tested your source water you use for the water changes? It's good to know
      what you're putting in the pond too.
      --Steve
      ..WWKC Treasurer


    7. #7
      joe09 is offline Senior Member
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      Quote Originally Posted by icu2 View Post
      I think keeping up the routine of water changes is a good idea.

      Have you ever tested your source water you use for the water changes? It's good to know
      what you're putting in the pond too.
      yes do your water change.i do weekly water change about 10%.best thing for your fish

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