| Dear Debra,
Because the light requirements for orchids varies quite a bit, a bit more info would be helpful:
1) What kinds of genera are in your collection? Phals? Paphs? Cattleyas? Oncidiums? etc., etc.
2) Where are you currently growing them?
3) Which of your orchids are not blooming?
4) Why do you suspect low light is the cause? There are lots of reasons an orchid might not bloom. Are they all blooming size (perhaps they were in bloom when you bought them)?
Light systems can be as cheap as $30-50 for flourescent shop lights all the way up to several hundred for other systems. It's best to first find out what your plants need, determine if extra lighting is even necessary, and of so, then get a system that will deliver what you need.
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