Quote Originally Posted by KALAMATIANO
i was wondering if it is a good solution to use common bulbs in your set up they dont add as many lumens as a 40 grolux and you waste a lot of electicity in heating!just spent more 10â?¬ it would be much better for your plant imao!
No, standard light bulbs do not work for growing. They give off a lot of heat and don't produce the correct light spectrum. You'll be wasting more energy than it will be taking in. Plants only take in about 8% of regular bulbs, the remaining 92%, is useless light, thus, useless to use.

The only bulbs suitable for growing are:

Mh
Hps
Sunlight (duh!)
CFL's/Floro tubes
Mh/Hps conversion bulbs (Hortilux)

That's all you can use.

I suggest, ditch the regular bulbs, use them for reading a book , get yourself a few CFL bulbs, those are the spiral bulbs, they screw into a regular light socket, and only use about 25% of the energy of a regular bulb.

I have seen and had amazing results using CFL's. You can find them at any store that has a Hardware section, or a lighting section.

Peace