I bought this and added a liquid level gauge, kent float valve with connections, plumbing for a recirc pump and a 1/4" drain on the bottom for filling sumps or whatever.
I had intentions of using it for a frag tank and water storage / water changes, etc.... but never used it.
Here is a picture of what it looks like but it is solid black not green. This is a pic I found on the net of a stock one.
$200 obo
Shawn - 971-570-7536