Thanks for your honesty, it helps.
Well, where to start. Dinoflagelates and other algae is usually a case of imbalanced Nitrate and Phosphate.
Not sure what corals you have in your tank, but All for Reef needs to be tested and dosed appropriately. And Benereef can increase your phosphates greatly which in turn can cause algae.
No water change in 3 years? Wow, I definitely wouldn't do that and that can cause your issues too. No matter what you read and hear from "Reefers", water changes are essential. All 4 reef won't replace your all your essential parameters that a water change does.
Ok, lighting, yes if you're running a longer schedule or more brightness, that can contribute to your algae.