Oh, you must've thought I was close to harvest and flushing my plants the last time. No, this was an intermediate flush. I did one 3 weeks ago just before initiating 12/12, and now this one, and then a last one in three more weeks, which will be approx 2 weeks from harvest at that point.

This grow is the first time I've ever used forced flushing. Before, I'd just stop using all nutrients about two weeks before harvest.

I'm getting more sensitive to details. I'd always noticed the crust buildup in the drip trays, and it had occurred to me that there is a lot of that same salty crap in the soil. Can't be good.