How do you rescape your sub?
I've had a tank I've been working with that's had a lot of issues.
As a result, I've ended up emptying it, scrubbing it, sorting the aquarium gravel, sand, or soil from each other by various methods, and then after everything is clean, reinstalling everything from the beginning. (long story as to why, and not the point of this thread)
So my question is, do any of you have anything you do to help keep your "cap" and your "sub" separate if you ever need to completely re-do the tank? I know starting over from scratch shouldn't be a regular event, but aren't there steps we can take to help us out in the future if we ever have to?