Here is a good site to find out some data on lamps. Click . Lamp selection is prolly one of the toughest decision to make. A same brand lamp will fire differently on different type of ballast. What looks good to other may not look good to you. One reason why I rarely ask recommendation on lamp selection. Another thing, is the marketing of manufacturers. All these 14K lamps are actually over 20K. You will not find a true 14k lamp. Even the highly praised Phoenix 14K is actually over 20K. You will see that some 10K rated bulbs are actually 6K which will make your tank look like somebody pee'd in it. Pretty much all lamps are made in Asia somewhere. Even some of the German claimed lamps are made in Asia. Nothing wrong with that IMO. One thing you got going is you are running SE lamps which gives you more of a choice. That is what I hate about DE, limited bulb choices that gives great color and par. Anyways, on that link I gave, PPFD is par and the higher the value, the better. CCRT is the actual K. If it has a 0 or if its blank, it means its over 20K. The understanding I got, Sanjays sophisticated equiptment can only read 20K and lower.