Here are what 4 of the 10w LED
spots look like on my 75 freshwater. Just added them yesterday I do have some concerns about if it will be enough light for my plants but for a 70 dollar investment I figured it was worth a go. But as far as lighting the tank I am certainly satisfied!
My plants are all lowish light types so hopefully they will be ok. I guess we will see!
You will have to pardon the reflection from the sliding glass door behind me