What is flushing?

In browsing some topics I came upon the term “flushing” and would like to know what it is.

Flushing is when you water with 3time the amount of water then your pot 1gallon pot so u use 3 gallons of water you do that to clear salts and nutes out mainly if you have so kind of problem or before you harvest


Thank you. Need to research this for the future.

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