I'll make this as painless as possible. This pond has been set-up for 1 1/2 months 400 gal. I'm using a Pondmaster 1000 w/ 250gph pump and a Tetra 5w U/V clarifier. Went on vac. for a week left U/V off, came home waters green. Added Tetra algae killer twice it got rid of the green water. Now I've been cleaning out the filter and using a fine mesh net everyday to remove whatever it is I've got. I'm thinking it might be the coagulated dead algae. but it doesn't seem like I'm making any progress:banghead3:. Any ideas? What am I missing? It is "sticking" to the sides the bottom everything. But when I make any water movement it just floats in the wate then I scoop it out. Should I continue this regiment?