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Actually, there is only 10k reeflux. No 20k reeflux that I'm aware of anyways. The 20k CV does put out higher PAR than the 14k CV and the 10k CV. However, the 10k reeflux does put out more PAR than the 20k CV. I'm not sure why the PAR is so low for the 10k and 14k CV. It is extremely low compared to other 10k and 14k lamps of the same wattage. Of course, it also depends on what ballast you are using for the comparisons. The only ballast which runs the 20k CV at higher PAR than the 10k reeflux is the magnetic.
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