I bought a Tunze 9002 for my 24ga nano tank.
The construction of the device is "shoddy" at best, as the top and bottom fell off many times when I was trying to set it up.
However, I set it up on Monday of this week, it's Thursday today and it's already pulling out skimmate....
So, so far.....I'm pleased with the Tunze 9002. Glad it's getting all that crap out of my tank. It's like liquid gold to my eyes whenever I see skimmate.