It says f15t8 /actinic 420 on the bulb.
When I put it in my anemone kinda moved away from it.
This is the description I got from the website
High intensity actinic lamp with strong emissions in the short wavelength region of the spectrum, peaking at 420 nm.
Ideal for marine aquariums, reef tanks, and African cichlids.
Promotes the growth of zooxanthellae algae, essential for the growth and well being of all photosynthetic corals and invertebrates.
Simulates the short wavelength blue light which penetrates to reef depths in nature.
Output closely matches the absorption peak of blue chlorophyll used in photosynthesis.
Long lasting: Effective for up to 10,000 hours.
This is the one I'm thinking of getting
50/50 combination of 6500k trichromatic daylight phosphor and actinic 420 phosphor in the same lamp.
Ideal for marine aquariums, reef aquariums, African cichlids and discus fish.
Provides high intensity full spectrum illumination, strong in the short wavelength blue region essential for photosynthetic corals and invertebrates, balanced with 6500k daylight for natural color enhancement and viewing pleasure.
Long lasting: Effective for up to 10,000 hours.