Ok well, I got the pond foam and started working on filling in the gaps. This stuff really expands, it says 3 times the size of the bead you lay, well lets just say its more like 5-6 times. Anyways, I was planning on doing some cutting and shaping of the foam but it looks like ill be doing more trimming than i thought, It should be fully cured and dried tomorrow, still have the overflow wall to foam in but Im liking the way it looks, just gotta see it in your head with the sand over the foam, it should all blend really nice.