@AquaticLifeProducts. Is there a place to find established photometrics for the dx18? If so where would I find them as I didn’t see them in the product literature on your website. Would be looking for the metrics of various bulbs at different mounting heights. I am considering a 48x24x24 tank in a DIY canopy so would like to figure recommended mounting height which will dictate canopy dimensions. FYI LEDs to be added in the future.