how long should i run my uv sterilizer

fjr

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just got a canister filter with a 9 watt uv built in. what kind of schedule should i let the uv run?24/7 or something different
 
fjr;550337 wrote: just got a canister filter with a 9 watt uv built in. what kind of schedule should i let the uv run?24/7 or something different
I run mines 24/7 hooked to my canister(185gph)...
20gal. reef...
 
Assuming it's for parasite control, why not only run it when/if you have a problem?
 
ok thanks guys i wasn't sure.The canister runs at 375 gph so it is to fast for parasite control from what i have read on here but hopefully it will help with algea and stuff.
 
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