Barricade can settle out--also pendi and other yellow powders. Dinitroanilines. Maybe you can find a better brand or a Dimension product that suits the situation.
You may wish to agitate your tank in the morning with a paint stirring paddle in your electric drill, before you start.
It maybe possible to set up a couple extra agitation nozzles inside the tank, and get a more powerful bypass agitation.
Make sure there is a good pre-filter in the tank so that no particles get into the main filter and pump.
Anybody else have good experience with this problem?