Hi again cimdma,
If your pond is getting runoff from a large area, and is flowing through, it probably consists mostly of soft rain water. If that's the case, you may need a lot more chemicals to clear it.
If the pond hasn't overfilled and lost a lot of water, it may start clearing when the level drops a foot or 2.
If you try to clear up the pond when it's at full pool, it can be a bit too saturated during long dry spells.
Turbidity from soft water stays in suspension forever, turbidity from wind and runoff will usually clear up very quickly in hard water (slowly or never in soft water).
