This is a generous donation from our sponsor Zoomed. This is an extremely high intensity T8 24 inch 17 W replacement bulb. Perfect for growing plants in freshwater or coral in saltwater. Halogen style bulbs produce a different light spectrum than LED. That is closer to natural sunlight with UV and IR. These lights will not be available for much longer. They have been banned from production in 2023.

https://zoomed.com/t8-ocean-sun-10000k/