UV meter's

[coreyc]

Is any one using a 6.5 solar meter ? they have a 6.2 and a 6.5 on Ebay I do not know what one I should bid on

 

[jaizei]

I think I would go with the 6.2

 

[Tony the tank]

If all you want to do is test UVB output...get the 6.2..