@Magnos Diffused daylight does make a huge difference with problem algae. I had issues with black brush algae in a couple tanks for some time, and about 9 years ago with monthly calibrations I worked the balance out to seven hours of tank light per day, and no increase in algae. The plants continued to thrive, but the algae stopped increasing, and that is the balance you want to achieve. My light was moderate at best, and the plants suited, and each tank is unique in this. But reducing the light by one hour at a time (a month or two apart), and fiddling with less fertilizer, I got it on track.
There were windows in the fish room, with blinds always closed. In the following summer, I noticed the algae increasing, not madly, just obvious. Next summer, same thing, and I figured the increased intensity and duration of daylight in summer was the cause. I blacked out the windows (being a dedicated fish room this was easy to do) and that ended the summer increase in the algae. Remained fine for the subsequent 7 years now. So, daylight does impact algae. As I frequently write, algae is not as fussy concerning the light, it canmake due with any unlike higher plants.
