used google. found several just like yours and this one,
http://lightbulbetc.com/42-Watt-Compact-Fluorescent-Spiral-Light/M/B0015Z0AM2.htm
i assume 'bloom' means flowering. 2700k and below are for flowering. over 5000k is for vegging.
6500k is awesome for vegging, 2100 is awesome for flowering, budding.
the lights I found like the one you showed are all in the 2700-2900k range, with @2800 lumens. you need a minimum of 3000lm per sq. ft.
if you have a 3x3 sq. ft. grow area you'll get about 310lm per sq. ft., so you'll need about 10 of those lights.
when I first started, I used 3x12w cfls, lol. bumped that up to 1x400w MH, 1x400w HPS, 1x360w HPS...
I start with the MH, then add the 400w HPS, then swap the MH for the 360w HPS.
max lumens for my veg stage is 5530lm psf. max lumens for flowering is 7860lm psf.
after the cfls, I tried some 500w mercury vapor, cost me about $100 us each, bought 2...they're worthless, but better than any tiny cfl!
don't cheat yourself...buy, at least, 1 HPS, 150w -400w. and it would be nice to have a MH conversion for vegging, but a HPS will work for that...
if you ain't got the $ now...save it. if you gotta grow right now....start with whatever, but before too long, upgrade!
P.S. I should clarify, got the MV bulbs between the cfls and the HID's...