DCReef;836820 wrote: Depends on your definition of best. Tunze Osmolator was the most convenient addition, but an Ecoxotic 453nm Blue Stunner Strip added the most wow factor to my tank of any purchase by far. I actually look forward to my main lights going off now.
I'm still in the building process of it, but, I can already tell that my sump is going to be it. It will be the tangent for all other good equipment (Apex, Skimmer, Heater, Pods, Extra Water, Doser, etc...).
Not trying to be funny but it really is the best $30 I have spent in the hobby. It has done more to improve my tank and my experience in this hobby than any other piece of equipment I have purchased.