Missing from the videos:
I originally floated the K1 in media bags to start cycling them, and at the same time removing bio balls from the tower every day.
from there, i moved the bioballs to the "fluidized chamber" and the K1 to the tower.
This is when i cleaned the bio balls, by filling the sump with tank water and circulating the balls in it with my hand, to know off any mulm still on them. This made a nice brown water to help seed the K1.
Finally, once all the bio balls were removed as the days passed, i had it set up, like you see in video 8.
more to come soon.