Uv flow rate

[Tom nhia]

Hey
I was wondering if anyone knew how calculate the flow rate for a 25W UV on a 30 gallon system for ich and such

 

[lapin]

Maybe this will help
https://www.reef2reef.com/threads/uv-flow-rates-for-ich.891543/https://www.reef2reef.com/threads/uv-sterilizer-for-ich-management.764366/https://www.reef2reef.com/threads/uv-sterilizer-flow-rate.1001666/

 

[theMeat]

The amount of flow rate is determined by the size/wattage of the bulb = exposure time. The size of the bulb is determined by the size of the aquarium. 25 watt is oversized for a 30 gallon. Not that that’s a bad thing in terms of ick management

 

[Tom nhia]

The amount of flow rate is determined by the size/wattage of the bulb = exposure time. The size of the bulb is determined by the size of the aquarium. 25 watt is oversized for a 30 gallon. Not that that’s a bad thing in terms of ick management

Yeah its one of the reason i got the 25w and decided to try to tun it for ick management. Main reason i got it is because someone was selling it for dirty cheap, "free" because it didn't work but cost me about $150 for the bulb, an off brand transformer and gas to pick up compared to $400 brand new.

I couldnt quite find the exposure time, theres a lot of numbers to understand haha

 

[Tom nhia]

I remember seeing the recommended flow for a 75g using the 25w, it was something along the line of 1100. Im assuming going that fast for a 30 is just as fine but wouldnt slower be better for a small tank to really get exposure time or would there be diminishing return

 

[theMeat]

As mentioned the wattage of bulb determines the gph=exposure time. On a 25 watt for parasites you could go up to 150 gph.
Uv sterilization does just that. It doesn’t kill ick, it sterilizes it, leaving it unable to reproduce. It also only sterilizes what actually passes through the sterilizer. Good for ick management but it’s not a cure

 

[The_Paradox]

I remember seeing the recommended flow for a 75g using the 25w, it was something along the line of 1100. Im assuming going that fast for a 30 is just as fine but wouldnt slower be better for a small tank to really get exposure time or would there be diminishing return

It’s total dose not single dose. In a circulating system the flow rate is not that critical. Don’t over think it.