badpacket
Premium Member
Bean, I think this is a dead-end at this point.
Some people in the hobby want quantifiable data upon which to base an opinion, others seems to -want- to believe what they want too believe. And after spending $$K for a fixture or anything for that matter, there is an inherent need for the id or ego to latch onto something, anything by which they can plausibly deny that they may have made a purchase that may/may not perform as well as what they had. This is not a slam at anyone who purchased Solaris, but a known human behavioral response.
If someone specifically wanted a lighting fixture which does not produce killer UV, then they have it. Of course that belies the fact that people have been using killer UV-producing MH for decades, and there are a ton of TOTM's which don't seem to be vast wastelands of irradiated coral stumps... Odd how UV is now unacceptable for successful reefing.
Now spending 3x, 4x, 5x+ as much on a fixture is the 'right' thing too do, as we are providing too much light with MH to begin with?
The PFO fixture is a nice one, however I think a healthy profit could still be made at the $1K price point, and we will undoubtedly see such products in the next 6 months from someone, because the efficiency is almost there, and there are numerous other benefits to LED. The fact that we don't know about actual life span for the LED's is worth considering. What happens when they lose 30% efficiency in a year perhaps, and one needs to increase photoperiod?
Cite circa 2004 (does not indicate time, just temp)- http://www.lrc.rpi.edu/programs/solidstate/pdf/ProjectingUsefulLife.pdf
There are a lot of extraneous reasons why we will see increases in LED efficiency in the near-term future. As they happen, LED's will only become more affordable, and realistic as the main light source in reefing. For now, people should realize they are on the cutting edge, and if they want to pay top dollar for bragging rights, they certainly can.
But please don't expect everyone else to ignore the known data, and jump on the bandwagon. Thats not what reefing is about, accepting or or promulgating.
Haven't looked at Sanjay's site, so don't know if anyone has done a real apples-apples comparison with a more 'normal' 175w MH set-up, but it probably doesn't matter. People will believe what they want to, as they have a vested interest.
If anything, I think while PFO has gotten a jump on the market, they have shot themselves in the foor with the apples-oranges comparison PR, and may have underestimated the average reefers innate desire to delve into the details.
Hopefully they will reassess and provide more realistic comparison data.
Some people in the hobby want quantifiable data upon which to base an opinion, others seems to -want- to believe what they want too believe. And after spending $$K for a fixture or anything for that matter, there is an inherent need for the id or ego to latch onto something, anything by which they can plausibly deny that they may have made a purchase that may/may not perform as well as what they had. This is not a slam at anyone who purchased Solaris, but a known human behavioral response.
If someone specifically wanted a lighting fixture which does not produce killer UV, then they have it. Of course that belies the fact that people have been using killer UV-producing MH for decades, and there are a ton of TOTM's which don't seem to be vast wastelands of irradiated coral stumps... Odd how UV is now unacceptable for successful reefing.
Now spending 3x, 4x, 5x+ as much on a fixture is the 'right' thing too do, as we are providing too much light with MH to begin with?
The PFO fixture is a nice one, however I think a healthy profit could still be made at the $1K price point, and we will undoubtedly see such products in the next 6 months from someone, because the efficiency is almost there, and there are numerous other benefits to LED. The fact that we don't know about actual life span for the LED's is worth considering. What happens when they lose 30% efficiency in a year perhaps, and one needs to increase photoperiod?
Cite circa 2004 (does not indicate time, just temp)- http://www.lrc.rpi.edu/programs/solidstate/pdf/ProjectingUsefulLife.pdf
There are a lot of extraneous reasons why we will see increases in LED efficiency in the near-term future. As they happen, LED's will only become more affordable, and realistic as the main light source in reefing. For now, people should realize they are on the cutting edge, and if they want to pay top dollar for bragging rights, they certainly can.
But please don't expect everyone else to ignore the known data, and jump on the bandwagon. Thats not what reefing is about, accepting or or promulgating.
Haven't looked at Sanjay's site, so don't know if anyone has done a real apples-apples comparison with a more 'normal' 175w MH set-up, but it probably doesn't matter. People will believe what they want to, as they have a vested interest.
If anything, I think while PFO has gotten a jump on the market, they have shot themselves in the foor with the apples-oranges comparison PR, and may have underestimated the average reefers innate desire to delve into the details.
Hopefully they will reassess and provide more realistic comparison data.
<a href=showthread.php?s=&postid=8925682#post8925682 target=_blank>Originally posted</a> by BeanAnimal
PJF with all due respect... you keep bringing up the same straw arguments. Of course Dana's article mentions UV, it is his number one favorite topic (along with the need to reduce lighting levels in captive reefs).
I am responding to the recent posts by slow-leak in order to clarify the assumptions drawn in the post.
I am responding to the fact that the 250W XM bulb with UV shield is a very poor example of 250W MH lighting. Popular or not, it has crappy PAR that comes in below that of some lower wattage MH and most other 250W bulbs.
Fatal Flaw? The 175W XM 20K comes in with a par of 51, That would make the lamp with the FATAL FLOW more efficient than the SOLARIS!
150W and 175W 10K offerings come in at the 70-90 PPFD mark. Even with their "fatal flaw" they blow the SOLARIS away.
So the "fatal flaw" of the SOLARIS unit is that it is not yet competative with better MH lighting in terms of efficiency (watts per PAR/PUR) if a good MH bulb is chosen.
Nothing is perfect, anything can have a "fatal flaw" sir.
I would add, that you keep saying UV is harmful to coral health, yet the MH bulbs simply do not put out that much UV. You make it sound like somehow we are all killing our coral.
You keep saying the same thing in an attempt to show these units in a good light and MH in a bad light (no pun) and infer that I do not understand. You are not "refuting" a point being made, you are sidetracking the point with fluff.
I am talking about (and grounding) the inflated claims and fallacies that keep circulating about these lighting systems. You are ignoring the conversation and keep saying "yeah but the fatal flaw is....". There is no "fatal flaw" sir. The units operate differently and until the LED units surpass ALL MH units/technology across the board in efficiency and growth, then your "fatal flaw" is nothing more than your own pet peeve based on narrow thinking or interpretation.
Yes, a UV free source would be nice for reef lighting. The SOLARIS is a step in the right direction. As is easily illustrated, it is not the most efficient option and likely will not be for several years. If you have a 250W SE XM 20K with a UV shield and are slightly overlit and have a heat problem, then the SOLARIS unit could be considered as viable energy saver if you keep it in place for 10 years! Your not going to save $113 a month by removing (2) 250W MH bulbs...
Last edited: