Posted 07 March 2016 - 11:57 AM
575 Tungsten equivalence for 105 is barely on the edges of possibility, although that's a surprisingly specific number. It's almost as if they're trying to make us think of a 575W HMI, but 100W of fluorescent isn't going to be anything like that bright.
And of course, that's more like 2K, even if you believe them.
As to colour, large numbers of these large CFL lamps are floating around, often having been sold as devices for, ahem, "hydroponics". They're probably all made on the same Chinese factory and I've found them to be, well, not unusable. A bit cyan, perhaps. They don't filter well to tungsten, but then again what does.