return Line Flow Rate question

[wolfpaq91]

does having a slow flow rate on the return line have any effect on my tank? I just purchased a UV sterilizer and the recommended flow rate is between 100-200 gph and right now i have a rio pump 10F which pumps 360 gph at four feet could anyone recommend some changes I should do.

I have a 50 gallon tank
250 watt MHl
5gal sump

 

[BurntOutReefer]

I would run the UV as a standalone unit......re-plumb with a powerhead........