Evaporating water

[Majbarsalona]

I have a fluval chi 5 gallon which has an open top. Due to evaporation, about a cup of water is missing everyday. I was wondering does evaporating water take nitrates out of a cycled tank and also if the amount is significant to where I could become a little relaxed on water changes?

 

[foster53]

Nope!! You still need to do water changes. Sorry. Less water volume becomes contaminated quicker actually.

 

[Majbarsalona]

Nope!! You still need to do water changes. Sorry. Less water volume becomes contaminated quicker actually.

Okay I was just wondering thanks though