What Size UV Sterilizer Do I Need? Freshwater & Saltwater UV Sterilizer Sizing Chart


Saltwater UV Sterilizer Chart

WattsGallons
30,000
µw/cm²
(EOL)
GP
45,000
µw/cm²
(EOL)
GPH
60,000
µw/cm²
(EOL)
GPH
75,000
µw/cm²
(EOL)
GPH
90,000
µw/cm²
(EOL)
GPH
870642428321256214
1575700466350280233
251501,200800600480400
403252,9001,9301,4501,160967
573553,2002,1331,6001,2801,066
806003,6782,4521,8391,4711,226
1147003,9002,6001,9501,5601,300
1209004,0802,7202,0401,6321,360
16012005,4003,6002,7002,1601,800
20015006,6004,4003,3002,6402,200
24018007,2004,8003,6002,8802,400
*Larger units are available for any size aquarium
* Lamp output is calculated at end of bulb life cycle.

Marine Fish Only Aquariums – UV sterilizers in the 75,000 or 90,000 columns are recommended for controlling diseases and algae.
Reef Aquariums – 30,000 to 45,000 is best suited as anything higher will likely kill desired organisms.


Freshwater UV Sterilizer Chart

WattsGallons30,000
µw/cm²
(EOL)
GPH
Pond w/ Partial Sun
Gallons | GPH
85-2006421,5001,000
15200-5007002,0001,800
25500-1,2001,2004,0002,000
401,200-2,0002,9006,0003,000
571,500-3,0003,2006,5003,250
802,200-4,4003,6789,0004,500
1142,200-4,4003,9009,5004,500
1204,400-6,0004,08012,0006,500
1606,000-8,5005,40016,0009,000
2008,500-13,0006,60020,00010,000
24013,000-17,0007,20025,00012,000
*Larger units are available for any size aquarium.
* Lamp output is calculated at end of bulb life cycle.

UV Sterilizer Installation Tips

For greatest efficiency install your unit with both ports pointing up if installing horizontally; if installing vertically the fill line should be the lowest port on the sterilizer to allow air to escape.

If you are running the UV sterilizer on a bypass from a large pump make certain to adjust the flow through the filter to proper GPH. Excessively high flow can reduce and even eliminate any effectiveness of even a properly sized uv sterilizer.

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