Also, focus on fast growing nutrient sinks for plants. Elodea, Hornwort, Hyacinth, etc and it'll help.
These plants are much better at light competition and certainly extremely aggressive at CO2, those, rather than anything to do with nutrients... is more the issue. Nothing grows below a mat of 1-3ft thick of hyacinth.
So plants that are aggressive at CO2 and bicarb use, high relative growth rates(weeds), go up to the surface rapidly or are already there etc, these are light and CO2 issues, less to do with nutrients.
Adding more nutrients = more weeds, not algae in these systems as well.
We cannot change light/CO2 much, so nutrient limitation can be done sometimes to control weed growth.
But floating plants are very effective, 30-50% coverage is good for ponds outdoors, then pitch fork the weeds for compost to keep it in this range. Hyacinth can double the biomass every week so it's a weed and needs management let's it takes over and chokes the pond and drops the O2 for the fish. So 30-50% works well for a coverage ratio.
On a large lake or large pond, this can invove a fair amount of work in the warmer months.
Tanks? Not much as long as you keep the % consistent.
Shade cloth does not change nor requires much if any management, but I like floating plants looks better