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[APD] Re: How do you guys do water changes?????
Have you thought about your dechlorinator? Every time you do a 20% water
change you take out about 20% of the dechlorinator and then add another dose of
fresh dechlorinator. This stuff doesn't dissipate. Unless you have chloramine
in your local water supply you should be able to do 20-30% water changes
without the dechlorinator.
With fish like discus, water parameters are critical, including temp. But
figure it out. If the water in your tank is 85ºF and the water you are adding
is 55ºF, then the the temperature will drop 20% of the difference. 20% of 30º
is only 6º, dropping the tank to 79ºF, within the fish's acceptable
temperature range for day-to-day life. It may delay a spawning for a day, but it won't
hurt the fish. In the winter time, smaller more frequent changes will allow
you to resolve the temperature issue.
Other parameters are more important when considering water changes in a
discus tank. Discus like very soft, acidic water. Running your water through a
de-ionizer (or an RO unit if you live in the eastern US where water is in
plentiful supply) will allow you to establish water that is to the fishes' liking.
You will need to dose your fertilizer with the water change if the tank is
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