thanks for that link. Interesting info.
By flush, I should say that I just remove the nutes from the solution, ph as normal and water the same amount as before. I try to do this for as long as I can without killing it. I know there are lots of folks skipping even this. The more I read the more I learn understand this no flush thing. I'm slow, though. maybe I'll try it next grow.
You are flushing mate. By stopping your feed and giving just water you are flushing the nutrients out of the medium by forcing the plant to use up what been stored.
I like to do 14 days flush with 2 watering giving 50% run off. The other watering Just water no run off . This leave a a nice clean end product
Your doing fine my friend
All the best
Mark..