Originally Posted by mr_X
The brand makes a difference. ATI and Giesemann being the most potent. In many cases, the lamps that come with fixtures aren't that good. the numbers you mentioned are simply color temperature, not potency. If you have any trouble with the SPS
, you can always put those lamps in to give your fixture a little more punch.
KZ are beastly also, slightly higher PAR then ATI but some claim they are the same lamps so who knows, they are slightly more money but i use them and they not only push out the PAR but they are have a great color. my setup is 3 super blues and a fiji purple the blues allow flourescent colors to pop and also targets coral growth while the fiji purple helps and adds a bit of color to allow reds yelows and oranges to pop
see how blue things are
this is how the purple accents the reds and green of the hammer coral