The algae forming on the one side is namely from less current, not nutrients.

You will sometimes get some algae formation when you change some nutrient levels, generally not a lot, ecologically, these can be large shifts over time, but not in our tanks.

They tend to be temporary in nature and after a week or two are gone away with good maintenance.

I would add more PO4.
Like 2-3ppm should be what you measure in the tank.
That will reduce glass algae.

CO2 seems high enough.
Add another 1/4 teaspoon 2x a week of MgSO4(Epsom salt)

That should about do it.
NO3's seem decent and about right.
I assume you are using KNO3 for the dosing of NO3.




Regards,
Tom Barr