UV Sterilizer

[Scorpius]

Aquaultraviolet with a DC pump gets my vote. Then you can vary flow for either clarifying or sterilizing

 

[msjboy]

Canada ehh? I think jlaquatics.com has lifegard.... and they are on sale. I use UV on a biocube and I swear, while the water is clean, I see no pods in sight. I heard this is common so beware.

 

[Kdub Koral Guy]

I am currently in the market for a UV sterilizer. I am looking at the AquaUV Classic Series UV Sterilizer 25 watt to accomodate a 125 gallon tank with a 40 gallon sump/refugium. My target is to mainly run the sterilizer for the intended purpose of killing algae blooms. I am a little bit troubled as to which option I am supposed to choose from. The sizing options for this UV sterilizer as 3/4", 1", 1 1/2", and 2" (I am assuming this is the diameter however it doesn't actually say).
I am having an issue understanding which option I am supposed to choose. Their online sizing chart is complicated. I don't understand how miliwatts/cm2 correlates to GPH/flow rate. Can someone please explain how to figure this out?
Also, if I have a 125g tank, and 40 gallon sump, will a 25w UV Sterilizer (website says it can handle up to 150g) be too small? Or should I opt for the next size up?

I had a bacterial bloom (really bad) in my Nano tank and bought this inexpensive 5 watt UV sterilizer and in 24 hours everything is crystal clear