UV sterilizer placement

[Jshiloh]

Hello all, I have a 120G main display into a 50 gallon sump and I just put up a 60G cube right next to it to try my hand at a clown Harlem. My question is where would be the next place to position the UV? Return to the 120 or the 60? Or does it even matter since it's the same water same system ?

 

[Jay Hemdal Verified Community Expert]

Hello all, I have a 120G main display into a 50 gallon sump and I just put up a 60G cube right next to it to try my hand at a clown Harlem. My question is where would be the next place to position the UV? Return to the 120 or the 60? Or does it even matter since it's the same water same system ?

Are you using the UV for fish disease control? Dual tanks served by one UV have difficulty in doing that. You can get good control against the TRANSFER of one disease to the other by having 100% of the flow going through the UV before entering the second tank. However, the dwell time there doesn’t protect the first tank if there is a disease organism in the second.

 

[Jshiloh]

Are you using the UV for fish disease control? Dual tanks served by one UV have difficulty in doing that. You can get good control against the TRANSFER of one disease to the other by having 100% of the flow going through the UV before entering the second tank. However, the dwell time there doesn’t protect the first tank if there is a disease organism in the second.

Not really disease but more for algae and water clarity

 

[Lavey29]

I'd put it in the closet if it were my tank and fix the issues that are causing your algae

 

[Reef.]

I would place it nearest to the tank you want the UV to have the greatest impact.