Basic salt chemistry kind of flaws water removing various salt deposits but i feel like were starting at a basic level and hence the only way flushing is viewed.
The rest of us who have been here for years have realized that if you find your plants upper tolerances for each stage and never exceed them then all you will ever create is normal vegetation, any thing less is deficiency and thats not what were trying to create.
See how you new growers get some weird idea that by creating toxicity and deficiency you are some how going to yeild primo, the rest of us are yeilding primo bud by avoiding this condition and at all stages roots uptake and leaves assimilate nutrients for growth so we provide.