Very interesting that you mention that a 1/2 cup of run-off is a mini-flush. I've been doing the whole "let it get low-moist, then feed a bunch of liquid and let a few cups run off" for so long...maybe I'm just flushing my nutes out. That whole thing was done out of fear of soggy roots...

I'm going to try your style...more frequent and smaller amounts. I've got a plant I just put into flower last week that'll get this treatment.