If you have sun hitting the tank (and I do too) I would suggest some broad leaf terrestrial plants growing from the tank.
this can arguably solve two problems at the same time.
Broad leafed plants with create shade, and use the nitrates that feed algae growth.
Below, one end of my 180, that gets some late afternoon sun.

Now the other end of the tank that gets quite a bit of mouring sun.

BelowI have pulled one of the dieffenbachia out of the water to show the root system below water in the tank.

Because nitrates test 5ppm and under, even with the heavy sunlight for 6 or 7 hours per day, algae is minimal.
A caveat, the tank itself is also heavily planted, and the sump, is in direct sun, acting as a partial algae scrubber.

I am also not a heavy fish feeder, my average routine is to feed once per day for 2 days, and not feed anything on the 3rd.