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Old 03-07-2005, 07:34 AM   #1
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PWC during cycle??

Hi everyone.

Thanks for the help so far. I have recently started a SW setup and have had a few questions answered already.

I have something that I would like to clear up:

While cycling a tank using fish, a PWC would be beneficial to the livestock by diluting the levels of ammonia and nitrites, I know that PWC's will extend the time taken to cycle the tank, but in the long run, does this dilution also affect the amount of bacteria in the system therefore, by increasing your livestock later, you will see increases in ammonia and nitrite levels until the system can catch up with the correct amount of bacteria?

Am I worrying about this too much?

Thanks

Brett
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Old 03-07-2005, 07:53 AM   #2
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With any non overstocked tank, the bacteria level will eventually rise to the match the waste load of the tank. That is the reason one does not want to add too many fish at once: The bacteria need time to "catch up" to the waste produced by the fish.

If running a fishless cycle, you don't want to change the water until the bacteria are established, but since you have critters in there, go ahead and change the water. More waste will be produced to replace the waste taken out.

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Old 03-07-2005, 07:57 AM   #3
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Thanks DaveBeaty!
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