Is this the light you are referring to and what model? http://www.fluvalaquatics.com/uk/freshwater/aquarium-lighting/series/eco-bright/
This is a big depends on answer.
Before it can be answered fully we require all of the following.
Size of tank. LxWxH
Plants you have or intend to grow?
Do you have a timer?
Co2?
Hrs you are going to have it ON & OFF.
If you have the tank Aquascaped can you post a photo please.
Is this the light you are referring to and what model? http://www.fluvalaquatics.com/uk/freshwater/aquarium-lighting/series/eco-bright/
This is a big depends on answer.
Before it can be answered fully we require all of the following.
Size of tank. LxWxH
Plants you have or intend to grow?
Do you have a timer?
Co2?
Hrs you are going to have it ON & OFF.
If you have the tank Aquascaped can you post a photo please.