Pavers added to top of walls.

Did pickup patio pavers to top off the tops of both walls. This also gives the walls an extra 2 inches of height, which allows the NFT tubes to clear the top of the nutrient tank ( See third picture ).

Still need to cut a slot this one paver to allow the electric line to pass thru.

Here you can see that the NFT tubes just clear the top of the nutrient tank. I also decided to reused the old tubes for one more year.