Does this water change math work?

Nickguy5467

Member
so my nitrates are like between 30 and 40ppm i think. i do my water change on sunday nights. if i did a 50% change would it bring my nitrates down to like 15 or 20? or does it not work like that?
 

Jojo205

Member
Nickguy5467 said:
so my nitrates are like between 30 and 40ppm i think. i do my water change on sunday nights. if i did a 50% change would it bring my nitrates down to like 15 or 20? or does it not work like that?
as long as there aren’t nitrates in your tap water, yes, it works like that
 

John58ford

Member
Yes, it works like that. As long as all the water is changed at once it works.

Two 25% changes does not equal a single 50% though so that math is where it gets to be more difficult.
 
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Nickguy5467

Member
thanks guys
 
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