I did not take pictures of each step, but I have a few pictures of the end results.
First, the rack from the front, 42qt tubs. A 5 piece shelf from walmart makes a 4 tub section, including tubs, costs about $85:
We cut the posts down so that each shelf sits tightly with each tub. We flipped the shelves upside down, so that the flat plastic surface works as a lid, and the bottom of the shelf (turns upside down) creates a little dip to fit heat cable flush with the bottoms of the tubs:
There are permanent screws in the back that stick out just far enough so that the lip of the tubs are stopped in the event that the snakes try to push out. There are removable pins in the front:
And screws to hold the pipes into the shelves, for easy transport and stability:
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