Thanks, I don't have any pics...I'm so bad at documenting stuff.
I used a 5/8" acrylic rod, put it in the oven so I could bend it, let it cool. I did not glue it to the acrylic sheet because the base rock I used was pretty heavy, deep, and stable. The rest of the rock I just picked and drilled. You can't tell in the pic, but the only problem I had was placing the acrylic sheet below the sand. What a pain! I still did not get it completely under the sand so it doesn't look as bent as it should. I'll keep working on it, but because of the height of the tank, I cannot reach the bottom.