- Joined
- Dec 23, 2018
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- 98
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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 ?