@N1Husker have you looked into an Algae Scrubber?
I have my own 120g tank and another 144g that I maintain at a local dentist office. I haven't done a water change on either tank in 3 years. Now, that's not necessarily the best thing to do, I understand that...but there's been no need from a perspective of nutrient reduction to do water changes.
These are not lightly stocked tanks either, they are medium stocked, maybe more. The 144 has a 6" Blue Tang, 6" Angel, 5" Yellow Tang, and a smattering of fat & happy smaller fish (because the office staff over-feeds them) and no algae problems
My personal tank is a bit of a different story, overfed, underfiltered, kind of a long term non-harmful LARS test system. There's some algae in there but fish are all healthy
But seriously, I make them (Turbo's Aquatics) so I may be biased but many others will tell you the same thing, so do your research. Natural filtration is the best.