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Discussion Starter · #1 ·
Is it necessary to do a 20% partial water change even if all the water parameters are acceptable?
 

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I do 50% or more weekly regardless of test results. Are your nitrates under 10ppm?
 

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Certainly can't hurt. I find doing 60-75% water changes just as easy as a 50%, so I usually end up doing those every 10 days or so.
 

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Discussion Starter · #4 ·
DJRansome said:
I do 50% or more weekly regardless of test results. Are your nitrates under 10ppm?
No it's 15.
 

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15 might be acceptable but 10 and less is closer to ideal.
 
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