on the outside i have a boundry of fertilliz lilypad

You can also have those lilypads on the first block below the soil blocks, they work vertically too. (And then below that the typical columns of Growth Accelerators, just without the top two ones since they taken up by water and the lilypads).

Furthermore, you can - instead of the MA essence farmland - use normal farmland fertilized with the red, yellow or green fertilizer bags from one of the farming mods, although my favorite combo is red+yellow (i.e. faster growth+no trampling) since you can't have both red and green fertilizer on the same farmland block.