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Use of uv light


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Hi , would like to ask for dome advise. I recently have a outbreak of white spot in my tank. After adding a uv light in sump tank, white spots on tangs cleared off quite alot. But my pair of clowns still quite affected. This morning i have shifted them to the sump to see if it will be more effective anot.

May i know how long can i on the uv light for?

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what UV kills depend on the contact time and spectrum, but by and large it will kill any floating virus and bacteria in the water, and yes, it includes good bacteria too.

how you put your UV in sump? is your UV is those exposed UV i.e. can see visible light de?

post-5037-0-59810400-1429675050_thumb.jp

子非鱼,焉知鱼之乐... (you are not the fish so you...)

Then: my 4FT low tech selling off tank... (2006)

Now: (2014)

@Sept 2014

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