- Joined
- Aug 12, 2017
- Messages
- 88
- Reaction score
- 23
Hi, i have a 30 gallon open top fowler which regularly requires around 3 gallons of top off weekly from evaporation. I was wondering since im topping off almost 10% weekly, do i still need water change to reduce nitrates. For instance, salt level increase with evaporation. But im assuming nitrate ecaporates with water that evaporates. So topping off level is constantly reducing the levels similar to water change. Makes sense?