The Hydroponics Blog

Flushing your plants at the end of the hydroponic cycle is essential to take all the chemicals out.

I favour a minimum of 2 weeks - although some people do only 10 days.

I don’t really feel if you’re been fertilizing at EC15-20 that’s sufficient.

Ideal is 4 weeks.  I have flushed smaller plants for 8 weeks.  The taste is excellent.

Remember though while flushing, just keep the light on them 12/12 - it’s just the feed you’re changing nothing else.

 Longer flushing = better taste and less chemicals.