Some pictures and update.

The snake we found when moving the tank in the house. Very non-agressive and we were able to hold it lol.

Started filling the tank

I started shimming the tank and look what came running out.... this one drowned... I hate these things. Also that shim is 1.5" wide

How the tank looks as of last night with the addition of 360lbs of sand. I still have 100lbs more.