First my attempt with luminescent lamps was really weak: no, it was not enough to let my flowers grow.
So, after 1 month has pasted, I can present my new system with:
1. Mercury lamps 125W each piece.
2. New metal lampshades that can resist these heat lamps. I am very proud of them, because I had never worked with sheet metals before.
3. New radiator for triacs (that operate on the quite powerful lamps).
| Quite bright light
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| There throttles are seen (I used old russian devices, we still use it because of some their advantages) and the radiator is, too.
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I could not say that these lamps are very powerful: I checked, the resulting illumination of the ground is 5 times less than for the clean summer day in Saint Petersburg. But, it is enough to support my plants alive (they grow now quite well).