Are JBJ Nano Cubes stable?

[bigdog54]

I was thinking of setting up a 24gal Nano Cube that would some day serve as a Quarantine Tank for my dream tank (240L). I found a "kit" at the following link:

http://www.jbjnanocube.com/

Does anyone know if this kit is any good? I've always heard that small salt water tanks were unstable and could spike quickly and kill everything in it. I was planning on filling it with LS and LR and 2 or 3 small fish.

Is this worth wild with this system?

[Samper]

I keep 5, 10 and 20 gallon nanos with no problems.
All I do to the 5 gallon is top it off. All I do to the 10 gallon is top it off. The 20 gallon requires some work due to what I'm keeping in it but even then it's not hard to maintain.