See I told you so!?!?!? Opinions needed.

[reeferaddict]

Originally Posted by Buddyboy

Well, i've tried using powerheads to break up the surface scum, but I find that all it does is push it to the sides. It's really frustrating! Does a CPR-style overflow box skim water from the surface, or just below the surface?

CPR style overflows skim from the surface and will get rid of that... moreso than an AquaClear and certainly to a totally clean level with a couple of powerheads pointed towards the water surface... keeping your surface clear is of the utmost importance with regard to light filtering and gas exchange... Go with the sump... hide the heaters, skim and top off to the sump, and it adds more water volume...

SamW You have a gorgeous tank and I assume that your surface isn't always like that... I will ask what the difference is in DO between scummy and clean... notice any difference?