The box it came in contained very little information, and the instructions are just all warnings. The manufactures website is Double Bright LED Lighting System. I hope this has the information your looking for to answer my question. I wish I could be of more help, but I don't know what information you may need.
Well its not giving us much information about spectrum but lumen level seems a bit lower then I would like, but if I was using a fixture like this then I would stick to low to medium light level plants, if the mediums die out then you know you need to stick with low light level plants like java fern and anubias.
Sounds like a solid plan. In response to the light spectrum, there is a picture on the box showing the wavelengths. It can be found here: Marineland LED Lighting Science. I dont know if this is the information that you need to make a more inform decision, just thought i would point it out.
Actually, in all honesty the marineland LED lights aren't the best for growing plants. I did some research into them as I thought they were super cool. General consensus is that they're great for showing off your tank, not so good for growing plants. They're simply not strong/bright enough for the plants.
I purchased a combo on sale that had that type of light. For the short time I used the LED light on my planted tank (a few weeks waiting for a T5HO fixture to be ordered), the Elodea actually did ok (wasn't thick and bushy, but grew pretty well surprisingly). I moved it to my kids 29 gallon tank - they liked the blue LED effect on their Danio glofish. It did look very neat. I wouldn't recommend using the "night" blue LED lights all night long. Fish need periods of complete darkness and my fish behave differently if the blue LED is on (they are more active) versus an almost completely dark room.
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