Hey Cheesus, after reading this latest post of yours I'm going to recommend that Darryl not provide a no charge 'loan' of their products for you to test as your review would not be unbiased. Your recent comment that indagro (can't ever even seem to spell their name right) has not much less than a 'zero rep' tells me you have preconceived notions that would likely find fault with it's performance at every level turn that 'insanely good' review into an insanely bad personal experience. You should stick with what works for you since this is not likely to be a technology that you could get ever get behind.
On to the purple lamp...
When a company puts up a price point near that of it's competitors, who established that price point first, it's their attempt at legitimizing their product in the customers mind as an equal in value. Here is one reason why;
A purple lamp, as any aquarium hobbyist will tell you is seen purple because it emits in the ~10,000 kelvin ranges. This is done to mimic under saltwater conditions where red does not easily pass through saltwater.
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From what can be seen of this lamp it is not a broad spectrum source for terrestrial plants in that is lacks the red for flowering. I've not seen any grows under these lamps so one can not say definitively but from what I've seen of the visual spectrum as a violet as a step above ultraviolet single lamp, veg-flower, I would be very surprised to see this lamp produce flowers. If it is not a painted on hue we are seeing then the phosphors could be weighted blue and red but since it lacks white it is not full spectrum as the combination of these two colors would blend into a white color that the eye would see. Since this lamp emits a violet/blue it would appear to lack sufficient red for flower.
Now unlike a lamp that has been painted 1/2 red and 1/2 blue inside, all is not lost with this type of 'all purple' lamp. As one who would like to install a lamp for my saltwater aquarium I would not hesitate to try one of these lamps in that environment. Or if I happened to own a nightclub I may decide to use it in combination with a disco ball and have a endless loop of Jimi Hendrix's Purple Haze playing in the background to complete the scene. Perhaps Cheesus can get them to provide him with one of their lamps and I'll personally send you that Hendrix loop.
