So is running GFO or a refugium not treating the problem properly either? This is just another method to combate these issues that people are constantly dealing with. I don't understand your reasoning that a algae scrubber is not treating the problem properly. Nitrates and phosphate naturally build up in our aquariums, why not use a algae scrubber that could be cleaned weekly to reduce them? It would be cheaper than running GFO and they seem to work very well from what I've read.