I actually just picked this up the other day, and I would say I'm pretty impressed with it's components for how stock/basic it is. The one thing I did add was a check-valve between the bubble counter and the diffuser. Other than that, it is working great.
"You think you have tomorrow, but when tomorrow comes it's not tomorrow; it's now- and that's all you have" - Marc Johnson
Ehei-Pimpfen 276 yo!