For those vertex owners, how would you justify purchasing the light as opposed to the competitor lights? The price, with the sale going on is quite high still with the addition of reds and UV modules. The only way I can find to justify a vertex is the ability to add onto the fixture but can't you do that with the new upcoming vega (for an even lower price as well)?
No trying to bash you guys, but rather would like to hear your opinions.
Great Question let me see if I can help you understand a little better. I'll start with some basics. LED Overview, This aquarium light type uses semiconductor technology as its light source. The difficulty in the past (and where many still misunderstand the complexities of LED's) is correct wave length (in nanometers) and ultimately the PUR of the emmiters (PUR = Photosynthetically Usable Radiatiion).
Essentially the best LED Fixtures are not aquarium lights in the traditional sense, even the emitters are not a bulb as many people think. These High End LED Fixtures use complex circuitry to evenly spread voltage over emitters and drivers to control each emitter precisely. Because of this, LED Lights do not loose spectrum quality unlike ALL fluoresent lights.
The emitters utilize certain compounds to provide the essential light energy require.
One way to think of the high end LED Fixtures (not low end LED fixtures which have more in common with an LED flashlight) is that these are computers that emit light placed over your aquarium, which is why certain care should also be provided.
What is also missed by many "lesser" knock off LED fixtures is the
drivers/circuitry used to power each emitter. Unlike daisy chaining Christmas lights together, one cannot simply daisy chain an LED emitter without changing voltage and spectrum to each emitter in the chain and it is the circuitry that separates 80% of LED from the 20% that have the correct and expensive drivers to maintain exacting voltages between each emitter.
This is one reason to not consider any LED that uses dozens of emitters to provide the amount of desired light lumens as the circuitry required to properly supply voltage so as to provide more exacting PUR would be considerably cost prohibitive, yet most of the LED fixtures with dozens of emitters are priced well below the cost of providing these drivers;the reason is the LED fixtures are essentially daisy-chained together.
In fact even an emitter from a "better" bin that is simply daisy chaained together will lose emitter quality versus the same emitter that has correct constant current drivers to tie each and every emitter together.
Better would be the LEDs that use fewer quality emitters, yet with better drivers with the end result much better light energy with less electricity used.
So to sum it up it's not necessarily what you see on the outside but the quality of the inside of the fixture and the amount of PUR your get not necessarily PAR. PUR is not easily measured but this is what your wanting in your fixture. After my research I choose the Vertex Illiumina for several reasons, 1st the quality of parts down to the titanium screws that hold the fixture together, the upgradability of the fixture, low power consumption (low power because of the quality drivers and emitters vs the competition. just look at power consumed by each fixture), the control ability with the vlink almost unlimited. No reflectors so I get a more even light spread and no spotlighting effect. Overall just quality and longevity not to mention a 2 year warranty. These are just a few of my likes. Hope this helps
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