A Rubbermaid stock tank that I drilled to be used as a frag tank. It’s an amazing budget DIY frag tank/grow out system. I'm only getting rid of it because I don't have time for 2 tanks at the moment.
You will need 3 bulk heads and a little PVC, but have the rest I can show you how to plumb it to be used with a sump.
I made my own stand using a few 2x4s, plywood and cinderblocks.
I'm selling the lights & wall brackets in the photo too.
I have an egg crate frag rack that fits perfectly into it as well.
https://ibb.co/jvGtGy3
$75 for the stock tank only.