I'm redoing this tank. The life ran out of it. I'll post pictures as I set up. It will be a soil tank but not mineralized. I found top soil at home depot that virtually looks like mineralized soil with no work, no fuss. It even has a little clay in it already.
As expected, it won't look like what you commonly see. The new title will give you hints.
What happened to the tank to cause it to run out of life? lol
Good luck with the new tank.