The Satellite LED+ will definitely put your 40g Breeder in the low to medium light category. i calibrated my light to only use the white and Red leds.
Another light which i find more compelling and slightly brighter is the Fugeray Planted+ LED. Having both of these lamps for a few months now. I have to admit, I do like this lamp a lot more than the satellite LED+. it is still in the medium light category but the light is brighter which will help with the 18" width of the tank.
"I am Groot", the faithful protector