Originally Posted by salmayo
I'd say No.
Luckily Red Inc.'s alone and Clear Inc.'s alone provide a good ballance that is just a bit on the shady side of a Direct Sunlight spectrum, which is quite good for pigment synthesis, but it shifts to less desirable shady as is travels down paste the first layer of leaves.
Adding Clear or Red Inc.'s to CFL's at a ratio of 1/3rd Watt Inc. per watt of CLF used, gives a more Redder than Direct Sunlight spectrum, which is actually better in my experience in general.
Preferred ratios, reveal the problem of personal preference on that one, but I prefer the Redder than Sunlight spectrums for Indoor light intensities compared to outdoor Direct Sunlight intensities.