We moved in a rush when I bought the place. I dreamed of one large L tank that stair stepped around half the room but the cost was not ideal at that point. When I move again I'm going to bite the bullet and say good bye to most of my live stock and start from scratch. I really want a huge in-wall since I have no actual view of my display in the living quarters. All my tanks are in the porch as of now.
The 20g stink tank is about to be permanently gone, someone offered 100 bucks for the tank and a small stand. I have faith that I can redesign one that has more function...
Improvements I would make:
1) bottom drain for flushing regularly
2) long air stone on bottom
3) aragocrete walls on 3 sides for maximum algae or cyano coverage
4) coast to coast surface skimmer fed into gravity fed recirc protein skimmer to eliminate surface buildup and allow maximum lighting
5) maybe some type of cleanup crew, but not enough to completely clean the scrubber. Just enough to harvest its nasty
Here is my sand now
Here is a rock
This is my drain section in the sump.
The larger pipe is overflow from the display and the smaller pipe comes from the salt mix tote down the room.
The return pump has a T that routed extra flow back through the sump and doubles as a water change hose for easy draining. The skimmer is rated for 220 gallons too.
Sounds like a great plan but LOTS of work and not going to be an inexpensive conversion IMO ... but hey you gotta do what you wanto do ... right ?