Like was mentioned once so far, get the econolight 150 HPS for $20, you can't get any other light cheaper. By the time you DIY or buy a CFL fixture you will have the same amount of money and probably more in it. You get a lot of light for $20 and if you are tight on money it will be worth every penny of it. HPS will give you the best results. The only problem is if you are in Europe I'm not sure it works on the 230 volt 50 hz system.
It will if it's multi-tap, and most magnetic ballasts are. Just use a different hot lead. They are usually 120/208/240/277/480. There are only so many manufacturers of ballast coils, so they build them to suit a multitude of applications.
When you add up the cost of fixtures and bulbs for any kind of sizable grow you're almost into an HID anyway. And with that $20 HPS find you're there and change.
The only
benefits to using CFLs or floro tubes is heat. If you're scared of FLIR thats right where you need to be.
A 4 bulb 48" T-12 fixture is around 40.00, and bulbs are around 2.50 ea for cool white, so we're at $50 for the set up. Thats 2 of those $20 150w HIDs, with change left.
For $50, you get a 4' 4 tube light that draws 160w (10 more than one of the $20 HID) and puts out 12,800 lumens.
OR..........you could get 2 of those $20 HPS units and have 300w of high intensity light at a whopping 28,000 lumens.
And since the Electric Co charges by the watt (Kilowatt/Hr), no matter where it comes from, 300w is 300w, and you'll pay the same for either Floro or HID.
So...........Lets recap:
4 Bulb 48" T-12 light = 160w with 13,000 lumens
or
2 150w HPS lights = 300w with 28,000 lumens
To
ME, it's a no brainer. You can run a 150w HID for
LESS than a 160w Floro. Twice the light per watt per dollar spent...........Where's the problem?
We all know that one can use floros and get some good bud, no doubt about it. But if you could get twice the light for less money, and bring your grow room out of the 70's, HELLO!