Uv canister filter, when do I use the uv light???

[Craig blomfield]

Hi, ive indtalled my new canister filter (with old one still running) it has a built in uv light and im just confused on when to use it. Friends have said just when the waters cloudy but my water never gets cloudy as I maintain my tank as best as I can.

Could anyone tell me exactly what the uv does and when to use it.

Thanks

 

[kenbob]

I have read that you can run it 8 hours a day or when you have problems. Like green water, diatoms or parasites. No need to run it 24/7. You can if you want.

 

[Nomadu571]

Yeah they are mainly used to treat infections like ich, or water problems like free floating algae.

Depending on your taste you can leave it on 24/7 and it wont harm anything and keep the water free from algae, bacteria and parasites. Or simply turn it on of you ever have an issue. Personal choice really.