QUESTION:
What can cause a media filter to go anaerobic?
ANSWER:
The person asking this question explained he installs and services generic sand filters, and that one has been a particular problem. After about six months of operation, the water “just quits going through the sand and ponds on top.” He further explained that while the sand was somewhat discolored, there was no biomat evident.
As with most troubleshooting, there are a number of possible causes and you have to work through them to reach a solution.
A generic or public domain single pass sand filter is typically confined in a watertight container or liner.
