You can get many "chip-on-board" (COB) LEDs with more than 200 Lumen / Watt in the 2700 - 6500 K range. They are blindingly bright, emitting up to 2.000 Lumen from a 5 mm² surface area, enough to permanently damage your retina if you get too close to them. A while ago I built a small light strip with several such LEDs, less than 25 € LED cost for more than 5.000 Lumen (a suitable control unit is around 10-30 € depending on whether you want it programmable and dimmable or not). So you could easily build a setup that delivers 100.000 Lux (maximum peak brightness you find outside during the summer at noon), though I'm not sure you'll enjoy it. Great for aquariums though.