you flush clean ph'd water only with 3 times the capacity of your pots, just keep pouring it through, usually ppl flush 1.5/2 weeks before harvest.
If u need to do it cause nute lockout they do it once and then go back to 1/2 nutes and so on
sorry to hear that bud.
how many weeks flowering were they?
maybe u should lock door to grow room to ensure someone isnt messing with your stuff..
maybe bad genitics
yes if u put the plant back in 24 hr light with grow nutes it should re-veg. there is a chance of hermi after u do this tho.
Marijuana Growing - - Re-vegging previously harvested plants