I heavily looked into this tank, and talked on the phone with the owner for about 40 minutes.
I also talked to a second local guy, who helped bring it to market.
Lastly, I spoke to someone selling the tank, but independent from the actual design.
As you probably already know, the zeroedge tank has the water cascade over the top of the tank on all four sides.
So water is not going to the edge, it is going over the edge continously.
The biggest problem with this is the evaporation. I imagine salt creep is also an issue.
If you have not seen this tank live, I can tell you that it does look very cool in person.
There is going to be maintenance to the four sides, like any tank.
With this tank it is all the more important, since in my opinion, part of the appeal of the tank is viewing it from at least 3 of the 4 sides.
When the tank was originally designed, it was with clams in mind.
So basically, it is a clam tank first. However, I have seen fish, corals, anenome's, etc... in these tanks.
They are shallow tanks (clam tank), but that makes it easier to maintain. (no worries that you will not be able to reach the bottom.)
Ultimately, I decided not to go with the tank, because the cost was too high and the real estate in the tank was too small for what I wanted.
They do make larger versions, but I actually like the smaller tanks, from a visual perspective.
This is not a tank you would hang anything off the side of, since that really defeats the purpose of the tank.
The cabinet under the tank should be were you would keep any filters/refugium etc.....
In summary, a very cool tank, that costs a lot for what you get.
In addition to cost, evaporation is a draw back.
A tank that you could quickly outgrow, but there are many nano keepers who are more than satisfied with smaller tanks.
If I had money to burn, I would consider this tank as a supplemental to my existing tank.
The tank itself is a showpiece without any inhabitants.
Hope that helps.