Flushing in any type of grow is a myth and a complete waste of time. You CAN'T flush anything from a plant. All you do is move what you think you flushed is move
the remaining nutrients to the buds........ So you starve your plants to death at the end, when they need the nutrients the most to finish.
read some science on root functions and nutrient transport.
Mg in the buds makes the spark right?/ NO NO NO!! Impossible! Make a 90ppms pile of Mg and light it on fire.........lol! The popping is caused by mites and other bugs in your buds exploding from their water content turning to steam. Ohh but I can taste the chemicals! WHAT chemicals?? 90% of micro nutrients ( which are the only ones needing chelation ) and chelated using EDTA, a 100% FOOD GRADE enzyme......
But I can taste them! BULLSHIT! Everyone who says this is full of shit! I've got $20 that says no one can't tell the difference between my organic buds and my hydro buds, yep, I do both. I've had that bet with people now for 2 years and no one ever even guessed right. This is just another damned old, hippie myth and needs to die once and for all!