Fish Tank High Nitrates

What is the best way to lower high nitrate levels in my fish tank?

The nitrate levels are at 20 ppm and i want to lower it.
But how much water changes? Like how often, and how much? i have a 50 gallon tank.

a tank that isn’t overstocked needs at least a 20% water change once a week that would be 10 gallons for your tank. If you’re a little over stocked do 20% twice a week and so on. Just keep checking the water and see what works best for your tank.

Jaguar Cichlid

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