Its an old thread but what the hell
I grow ebb and flow w/ 5in hydroton filled netcups. I use AN 3part with only superthrive for an additive. I also run purified drinking water from BJ's in 5gal jugs because my well water is 9ph and it CANNOT be adjusted to a reasonable number as it immediately rises back up. My average water consumption/evaporation is just about 5gal's per week with 40 5" netcups per table. I only change the water after every harvest, so weekly I add 5gal of clean water to 35gal's of left over water.
I have not flushed but I have noticed some issues with my bud compared to soil grown being flushed.. nearing the final month I start receding the nutrients from a peak of 1.2ec (840ppm) to .2ec (140ppm). I do this by only adding nutrients every other time I add fresh water and I also cut the amount added last time in half. This gradually brings them back down to my desired strength. By this point they should have about a week remaining and really starting to thicken up.
All traits differed between the exact same strain Green Poison *same mother 5 in soil w/ flush & 40 in hydro w/o flush* The green poison in hydro looked phenomenal, it grew faster, thicker, and more dense. Its dried appearance was again phenomenal but its smell & taste left me unsatisfied and the high was strong but short lived. Soil w/ flush clearly wins smell, taste and potency.
If i can ever get these stupid fucking clones to root the next hydro table will be flushed and I will report back on my results hydro vs hydro