Sera Blue Sky Royal[Power - 18W]

12,000 Kelvin - Intense bright blue light - simulates lighting conditions in tropical rivers and lakes.

Thanks to its perfectly balanced spectrum, sera Blue sky can be used as a single tube or in conjunction with sera Deep sea, as a light source for marine aquariums.

The combination with SERA Tropic Sun is optimal for freshwater aquariums.

Good lighting for aquariums is not limited to fish only — it is also essential for any live plants growing in your tank. Plants need light for photosynthesis to produce food from carbon dioxide and water. Tropical plants, for example, need 12 hours of light daily, while cold-water plants need light to vary with the seasons.

Important: The service life of aquarium bulbs is 12 Months. The bulb's spectrum gradually changes, and after this period, it can no longer function as an aquarium bulb for the intended purpose.

For best results, it is recommended to replace aquarium lights every 12 Months.

Essentially, watts tell you how much energy the light consumes, while lumens tell you how bright the light is, and Kelvin tells you the color of the light.