Heyy everyone good day. So if you have come to oue store then you know that we only use Giesemann t5. This is because they produce the best PAR out of any t5 light we have ever tested under a PAR meter. I have allways stood behind Giesemann as I have used them for years and they are made in Germany to the highest standards and quality. Finally they have come out with there Teszla Led unit and I have finally got them. These LEDs are insane, Built in sunrise,sunset function 4 specrum bulbs 120 degree light spread and the best part is they dont melt your coral. This company is the leader in aquarium lighting, they are the only company I trully stand by so if you are thinking of changing your lighjts or just want to see these in action come on down.We should have 2 units up and running and Im putting them over softys so you can see that they dont melt