Nitrate levels and water changes

This page will indicate how much water needs to be changed to reach your target nitrate level,based on the tap-water nitrate levels.

Nitrate level in tap-water (mg/l) 0-50 mg/l is found in the UK, other countries may be higher
Current nitrate level in aquarium (mg/l)
Volume of the aquarium in liter
Target nitrate level in the aquarium (mg/l)

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