One month in first algae question

[Diveshaman]

That is the one!

It appears from photo u ran water from return pump to top of UV then from bottom you return back to tank? Does it matter if I go from return pump to bottom of UV then up and out top of UV back to tank?

 

[Diveshaman]

It appears from photo u ran water from return pump to top of UV then from bottom you return back to tank? Does it matter if I go from return pump to bottom of UV then up and out top of UV back to tank?