Well, blue LED lights, which are most times sold as moonlight bulbs, are good for aquarium fish. They produce a calm blue hue that allows your skittish fish to venture out and feed at night, while also letting fishes that are only active during the day to get the much-needed rest.
Does blue light encourage algae growth?
Blue lighting can cause excess algae in freshwater and low Kelvin lighting, peaking in the red, can encourage algae in marine aquaria. Bulbs and tubes degrade over time, lowering their Kelvin rating, possibly causing more algae and producing light less useable by plants or corals.
Can you leave blue LED on in fish tank?
Blue light is harmful to fish if it is incorrectly used. However, most fishkeepers use blue lighting in their tanks with no ill effects. Remember to use aquarium-safe products only, and give your fish 12 hours with the lighting on and 12 hours with it off, every day.Mar 30, 2021