Oh yes, there are still stuffs that I haven't finish. just like wombat2 said, the huge black MH cable and the "skin" for the stand. actually I was thinking about using 2 simple panels, painted same color as the wall to cover the stand, and use velcro to stick it together, for easy removeral, but magnet will work as well, we'll see.
I was thinking to do a zero-edge design at first, but the money and time used will be way more then this, so I scratched that out, although one day I may attempt to do one of that.
yeah, the sump/check valve will be the biggest problem, I will see if I can come up with any safe guard. maybe 2 check valves, or an electronic valve just in case if a flooding occurs, I will totally keep that in mind.
thanks for all the comments.