Water changes - expense

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I currently only do a water change every 2 to 3 weeks. This is mainly due to the expense of making the tap water safe.

Do I need to add chemicals to tap water to dechlorinate it if I am only changing a small percentage of the water. If I do does anyone know of a cost effective way of doing this i.e permanent filter or bulk purchase of suitable chemicals. My pond is approximately 3000gallons and contains 10 comets, 10 shubunkins and about 20 koi, most of which are about 20cms.

Any info would be greatly appreciated.

Posted on Jun 20, 2005, 11:55 AM
from IP address 217.44.54.165

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  1. Water Changes. Shazz, Jun 20, 2005, 3:47 PM
    1. change of cartrage. paul b, Jun 20, 2005, 5:44 PM
  2. Water Changes. Paul, Jun 20, 2005, 4:38 PM
    1. Dechlorinate only new water?. , Jun 20, 2005, 4:44 PM
      1. Re: De-chlorinate only new Water!. , Jun 20, 2005, 7:56 PM
        1. Thanks all. , Jun 21, 2005, 8:54 AM
          1. Dechlorinator. Paul, Jun 21, 2005, 9:26 AM
            1. Will try that. , Jun 21, 2005, 9:36 AM
          2. Re Flicking. , Jun 21, 2005, 11:20 AM
            1. Purification using filter. , Jun 21, 2005, 12:15 PM
              1. Re Purifiers. , Jun 21, 2005, 3:04 PM
                1. Purifier. Paul, Jun 21, 2005, 3:17 PM
                  1. Re Purifier. , Jun 22, 2005, 11:13 AM