Cannakeeper I think I may try your idea of using the weak nutrient solution as a flush between the veg and bloom change. The plants are dark green when I harvest so I think your on to something. The reason I was changing the plain water every other day on the last 10 days was because I thought since the drip system I use recirculates the water I would be adding the removed salts right back into the plants if I didn't change the res so often. I calibrate both the TDS and PH meters I have so I think the PPM of the water is fairly accurate. I would have went out and purchased a RO system, but I rent the house and didn't want to put a hole in my landlords pipes, plus I figured I didn't need RO water if my PPM was so low.

Weedhound-Last night I ordered a Bud Blanket online. I'm going to get away from Hydroton and see if that helps. I read somewhere that you should cut the nutes back before you get to the flush, so I think I'll try that. Thanks to everyone for the replies, you have given me a bunch of great ideas. I think I was premature on quitting I'm going to keep trying.