Before setup fill central well with potting media and press it to compactFit the black water tube into its connector and then place the plant into the pot and plant as usual - use of a soil-less media is highly recommended for all self-watering plots.
Initially, water from the top, wetting the whole mass of growing media and allowing water to collect in the reservoir below. Repeat this procedure for next 3-4 watering. If the water comes out discolored, discard and clean reservoir cup.
Sub..