I grow in 5-7 gallon pots, I feed every watering FF line up (before going organic) and what I did was put two in a rubber maid bin with a hose attached that runs outside, then I use the water hose and water the 2 in bin until the water runs out the bottom, wait 20 mins then flush agan with water hose, wait 20 mins then use PH adjusted water to flush the last time (royal flush) and I flush 9 days before harvest. My smoke is never harsh, never tainted, burns clean.