How to Improve the Efficiency Of UVC / UV Water Clarifier used in Koi Fish Ponds?

UV clarifiers are very effective in combating green algae, i.e, single-celled algae and will also destroy harmful bacteria's.
But the following factors and water parameters should be kept within the safe margin to get the best results out of your UV water clarifier.

Water Supply source Raw Water
Feed Water Pressure Max 4.5 Kg
Feed Water Temperature 15° C -- 29° C
pH 6.5 -- 9.5
Turbidity < 5 NTU
TDS < 1500 ppm
Hardness < 300 ppm
Iron .03 ppm
Manganese .05 ppm