aquarist2013
New member
Just to add some background: Tank is 24" deep, so wondering for best light penetration, if I should go for S300 with 60 degree optics or S200 with 90's? (Presuming it fits!)
If your tank is less than 20 inch wide I think S200 with 90 will be a good choice to go with. The app is obvious better than the razor knob control .