algae scrubbers

Some claim their ATS reduce or eliminate tank algae. It makes sense in unplanted tanks where excess nutrients are the cause but what about the claims I am seeing that algae is being reduce in planted tanks by giving a prefered optional growth site within the scrubber??? It does not add up for...

Hi Masters of Aquatic Lore, Ive been fascinated reading all I can find about the algae scrubbers. The concept of intentionally growing algae in a place seperate from but connected to the aquarium (as in a sump) so as to soak up nitrates and phosphates etc is especially amazing when you consider...