LED aquarium lights can make the tube a super white light,make the water transparent and clear.By the way, LED aquarium lights can promote the aquatic plants photosynthesis,then,the aquatic plants will grow better.LED grow lights apply to water depth in 50 ~ 60 cm of the aquatic plants to...
They needn't to be on sand-bed, you can just put them at the bottom of the tank.
you'd better keep your light on 8 hours/day, and the temperature of you tank is 22-25 Degrees Celsius is better for your coral. By the way , you should add some traceelement in your tank, it is better for your...