Buffy,

You mentioned running at 6" this year and concern that the fertilizer is at the bottom of the slot but I don't see any diffusers on your outlet tubes (unless I missed them in the video). Without diffusers all air has to come out the bottom of the tube - along with the fertilizer. Generally this blows a portion of the fertilizer back up again so most is really not down at the bottom of the slot as you may think.

What fertilizer blend and rate are you applying here?

Thanks for the video.

Jim at Dawn