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DaveTheNewbie
you are keeping the medium too wet. the roots have no impetus to spread. now that you have torn off the roots in the res the roots in the container will spread more.
i suspected this myself, thats why im now watering 1 min per 2 hours
with a wave pulse you want frequent, small amounts. you have yet to do this in either grow and it is the reason you are having problems.
i was watering frequent small amounts (1 min per 8 with a low volume)
you really need a repeat cycle timer.
i have one : thats how i water 1 min per 8