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Old 04/09/2011, 08:19 PM   #74
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Join Date: Oct 2009
Location: Lancashire, UK
Posts: 773
One of the issues with the majority of residential UV systems is that they are under powered. I would suggest that your 25w UV is waay underpowered for your tank.

What are the flow recommendations for that unit?..quite low I suspect? If you have the water rushing through it from your return pump I doubt that it will have the contact time in the UV to make any difference.

The salinity will need to be lower than 1.022 to have an impact on the ich too....sorry.

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