On the linked light, no where does it indicate the spectrum. It mentions white and blue diodes, but it is the composition of the "white" that matters. White light is composed of all the colours of the spectrum, like a rainbow. The balance of those colours in artificial light is critical. Aquatic plants require red and blue light for photosynthesis, and of these two red is the more important. Adding high green light does improve plant growth, but without the red (especially) and blue, photosynthesis cannot take place. The problem with so much LED light is that it is high in the blue with very little red, even in the "white" light.
In household lighting, we speak of warm white and cool white. Warm white means there is more red in the light, and cool means more blue. The colour temperature is expressed in Kelvin degrees; the lower the K number, the more red/yellow and "warm" the light, and the higher the K number, the more blue with less red and "cooler" the light. Mid-day sun is in the 5500K to 6500K range. My tanks have 6500K over them, one has two tubes so I have one 6500K and one 5000K which adds a tad more red. The 6500K has high red, blue and green wavelengths.
I would not recommend placing an aquarium in front of a window, as even ambient light entering through closed shades can upset the balance and cause algae. I had increases of black brush algae in my tanks two summers in a row before I realized it was due to the increased length of daylight and the brighter daylight entering the room in summer, even through closed blinds. I had the tanks in a dedicated fish room, so completely blocking most of the windows solved this, because it kept the increased daylight out, and that had been upsetting the balance in the tanks, causing algae.