How much UV

[charles1976]

Hello all, please can i have some advice... How much UV Wattage do i need for a pond circa 3000 Gallons. Thanks. And any recommendations...

[boogatee]

what size pump are you using .... UV's should be sized against flow rate not gallonage. Flow too fast past the UV and it wont do its job ...

For example looking at the TMC range of UV's (pondclear/proclear)

25W max flow rate 2000 gals/hr
30W max flow rate 3000 gals/hr
55W max flow rate 4000 gals/hr
110W max flow rate 8000 gals/hr

hope that helps

[charles1976]

Yeah great thanks very much, have decided on a 36W Blagdon unit.

[fishy hands]

what size pump are you using .... UV's should be sized against flow rate not gallonage. Flow too fast past the UV and it wont do its job ...

For example looking at the TMC range of UV's (pondclear/proclear)

25W max flow rate 2000 gals/hr
30W max flow rate 3000 gals/hr
55W max flow rate 4000 gals/hr
110W max flow rate 8000 gals/hr

hope that helps

why does it have max surely i could put more uv in than was required so i might put a 55w with a 2000 gals /hr

[boogatee]

In the TMC range , the max is the max flow rate for the given wattage

so you can flow up to 4000 gph through 55W ... so 2000 is fine, but false economy.... why spend on a 55W when a 25W will do and a 30W has additional headroom. Remember you not only pay additional for the larger UV but you also pay in electricity for the extra 25 or 30 watts.

[brians]

its worth mentioning that i believe the wattage ratings are for the output of of the uv lamp and not for the electricity used for example i have a tmc 110 uv lamp which has 2x55 watt lamps the electricity used for this is 78 watts

hope this helps

Brians