Wow!!! That really sums it up.. I thought there were ppl on here that actually new what they were talking about..
Here's it is little more in depth...1.. It does totally make a difference how you're growing.. If u r 100% organic. I mean your making you're making compost, and really all natural ingredients. Well, then flushing isn't really that big a deal.. But if you're using anything that has even one synthetic additive, then yes you should flush.. Someone said that 10g of water for every gal of soil.. That's a bit excessive, normally 3G of water to every gal of soil does the trick.. That'll get all nutrients out and all the salt built up.., Which brings me to flushing agents... Are they a waste of money? Well that's for u to decide. For ppl that grow in something like straight ocean forest, or happy frog a flushing agent would b helpful because in a five gal pot of soil u would need 15 g of water in one sitting to properly flush it.. Well with as slow as it drains you'd be there for days.. So using something that would speed up that process like a flushing agent.... well might come in handy...
2. Ppl stop asking "how will depriving your plant of nutrients at a time when it needs them most help." That's amusing to me.. Your not depriving them of nutr. Your depriving whatever media you grow in of nutr. Which like i said before forces your plant to eat itself... The most natural clean food that it could get.... (Which leads to a whole other topic of pulling leaves to allow more light inside your plant..don't do it!!! Your plant needs those leaves when u flush!! Not to mention pulling a leaf off that's in a prime spot of light is stupid as hell, within a few days the plants just going to put another one in the same spot.. Y? Cuz it wants it there to help it grow!!
Anyways.. I'm sure u have at least two plants that r the same age and strain.. Test it yourself.. Properly flush one , and give the other food until u harvest.. U decide if it makes a difference... If I were a betting man id put my money on the plant u flush not only yielding more and tasting better.... But what do I know I've only been growing for 20 years.. Oh and every nutrient company out there( which all say to flush) hasn't a clue about it either. They just want your money.,, lmao