Should I turn my UV clarifier off in winter?

If you have fish, don’t turn off your UV clarifiers in winter. They don’t just kill algae that cause ‘green water’. They also kill bacteria and viruses that can cause disease in your fish.
Articles on UV Clarifiers.

If you have fish, don’t turn off your UV clarifiers in winter. They don’t just kill algae that cause ‘green water’. They also kill bacteria and viruses that can cause disease in your fish.