Bill, that's the tightrope you have to walk. Too many underwater weeds and they utilize the majority of the nutrients, not leaving much to sustain a phytoplankton bloom. Even with a phytoplankton bloom, there is enough sunlight along the shallow edges that FA can grow.
The best bet? Get a bloom going and keep seechi readings 18"-24" and stock Tilapia (where legal) to keep chowing on any FA that grows.
It's all about how well you can walk the tightrope.....
When someone says that they want a balanced pond, they have to realize that the balance only remains so for a nanosecond. The owner/manager has to keep nudging it back one way or the other. Think of a teeter-totter. How hard is it to keep it balanced equally with living things on both sides? That's the battle we have keeping a pond in balance.
