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For problems related to unusual turbidity or floc formation, see the Turbidity and Flocs page.
Turbidimeters
See For information on cleaning (should be done very often) and calibrating (should be done every two months) the turbidimeters see Turbidimeter Maintenance.
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For information on getting air out of the tube flocculator and getting it started see Tube Flocculator Troubleshooting.
Flocculation Tanks
For information on maintaining and cleaning the flocculation tank (vertical flow hydraulic flocculator), see the flocculation maintenance page.