Uv sterilizer??

[peopleschoice]

Hey guys I'm new here I've been running a 75 gallon with a 20 gallon sump setup for about 9 months now and I'm having problems with brown algae so I've been thinking about setting up a UV sterilizer. What I'm wondering is what wattage I should go with? And is bigger necessarily better when it comes to sterilizer?

 

[SaltLifer]

Bigger is absolutely better. The longer the light, the more contact the water will make, the more time is has to kill stuff. I dont think they help with brown algae though. They're more for limiting bacterial or parasitic outbreaks as far as I understand.

 

[CJBuckeyes]

It would be best to ID what you have. It could be algae, cyano, spirulina, diatoms, dinos, etc. Do you have access to a microscope? A uv sterilizer won't really help with most of these.