Originally Posted by PaulieWaulie
Yeah Im still fairly novice so Ive been going by the recommended instructions per users on here. But like everything else after awhile you start seeing what things you do and don't need to do based on your setup. I find when I flush them after 10 days of water there isnt much ppm left. so even after running 3-4G through a 2G pot Im going from 400ppm down to 200ppm which is tap. I just like to get everything out completely. Which I also need to do anyways since I reuse my pro mix as soon as Im done with it, so I dont want there to be any build up salts at all.
i honestly wouldnt worry about that kind of flush. i would just do 14 days of plain water if i were you. its easier and uses less water and gets the same results IMO. you dont need 0ppm running out of the pot before you harvest. that's just OCD. i've grown for a few dispensaries and we never did that any any of them. my fav dispensary flushed for 21 days, so thats what i usually shoot for.
sometimes ill push some nutrients in week 8 then just do the last 2 weeks plain water.