I bought this for a 29 gallon tank. It was so bright I set a Beamswork dimmer to 6. The plants used to turn yellow, but now they are starting to come out of the tank. I think it was important. There is no algae on the glass but the plants feel good. I have purchased several Beamswork products and am very happy with my purchases. I mean an aquarium with freshwater shrimp.
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