For the size of you tank I would go with one Hydra 26 hd if you would like to go total LED. I had an orbit marine, though the light did a good job I wanted a light that could grown coral. $350.00 may be a bit pricey but look at it this way, the light you have now cost$$ and another light will cost $$ and soon you will be looking for another light$$$ Get what you need and for the future and save on the end. Kessels are nice light too, but I did not find to much information on them and you have to have a controller to run Kessels correctly. I do have a controller but use the app from AI/Ecotech