I bought a pair of these to finally replace my VHO actinics. I couldn't find any reviews on them, so i had to go by the description and spectrum profile on the website. What great bulbs! They are a perfect 17k and are similar to the ATI Coral Plus, but without all the pink. They’re being overdriven by an Icecap 430 ballast. I’m really happy with them and how they supplement my LEDs.