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Old 08-02-2011, 02:43 AM   #11
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What works works. My mushrooms exhibit what I would expect for a higher PUR density even at the bottom of my 32" tank. They are 1/3 the size of the ones in the overhangs out of the light, but they are multiplying like mad. I don't have a lot of hard coral, but frog spawn and hammer corals are growing daily. If I need more light, I can always add two more panels, but the way everything looks, I am getting plenty of light.

I have built high power lasers using diodes pumped up to 4 watts and more. Laughing at an array of hundreds of 1 watt LEDs is misinformed. That is a lot of usable light, if the LEDs are the right color combinations. Many articles support the fact that LEDs have a much broader spectrum centered on the corals sweet spot. Again, it is about total watts, not what each element can produce. Basically a panel with 100 1-watt LEDs is about the same as one with 50 2- watt LEDs. If they sell you a panel with 100 LEDs and it draws 5 watts, guess what, it is junk. The rest is circuitry (can be a big thing if done wrong) and heat dissipation for the LEDs. As well as lenses for focus and spacing. They come on instantly, run cool, last 50,000 hours and can grow corals...what is not to like?
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Old 08-02-2011, 03:25 AM   #12
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i honestly feel that certain people downplay the advantages that led's bring to the table because, well they simply domt want to admit to something better...of course theres other reasons as well...but im extremely glad theres people like greg that take a step of faith and come out on the winning side...personally i wouldnt care what anyone said about led's....you went from 1500w of wasteful heat=producing MH to a couple hundred watts of super-effecient LED'S...and your seeing improvement in corals...along with sustainability
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Old 08-02-2011, 03:35 AM   #13
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So far so good. It will be interesting as I start concentrating on SPS growth.
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Old 08-02-2011, 11:15 AM   #14
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Hey Greg,..I almost pulled the plug on a couple of stark 20 bulb, 60 w units for my tank but was advised by my buddies at the lfs to hold off,...they have a tank set up ( 40 gal + - ) as a display and they are running one unit over it but were unsatisfied with the results so far,...they were saying that different people have had different results concerning led's some favorable and some not,..their unit seems to grow some of the corals well while others just browned out ... I'm always drawn to the display like a moth to a light everytime i walk into their shop ,..I love the look of the led and the fact that you can dim the lights up or down to create the look you want , I love the shimmer look also,...... FOR NOW I replaced a couple of my old t5 bulbs with some newer ati bulbs ( much better color) but I did order a blue led stunner strip to run along side of my t5's. To add a shimmer ,but we'll have to see what they do for me when it arrives,.....I'm kinda like you in the fact that I like to try things a little different and seeing things for my self,.....I'm very interested in your results,... I still really want to try these units.,..but.......
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Old 08-02-2011, 01:26 PM   #15
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The quality of the light is quite different. I too have seen some corals respond splendidly, but some not as well. I had the same thing with MH though, they are so much easier to deal with, I may just keep what works under them and get rid of the stuff that doesn't.
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Old 08-02-2011, 01:37 PM   #16
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Old 08-02-2011, 01:49 PM   #17
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I think that may be the key. I would rather tailor my corals to work with lighting that I find acceptably sustainable than the other way around. It's really about what you want from your tank. We want a relatively self-sustaining ecosystem that is healthy and thriving. Hence, a sump with a large refugium and no canister filters to change or clean. It kind of fits in with our greener style of living to have less energy consumption and neither my husband or I are really excited about the negatives of metal halide. But if your goal is to grow some really weird difficult and unusual coral... Well then your prerogatives change. It all depends on what you want from your tank. Hey... I refuse to have anything aggressive in my tanks because the aggression bothers me. Doesn't mean that I don't think that triggers aren't one of the most beautiful fish out there. Just doesn't fit into our vision for our ideal tank. To each their own. We are going with LED because it makes sense to us.
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Old 08-02-2011, 02:16 PM   #18
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Quote:
Originally Posted by Gregcoyote
The quality of the light is quite different. I too have seen some corals respond splendidly, but some not as well. I had the same thing with MH though, they are so much easier to deal with, I may just keep what works under them and get rid of the stuff that doesn't.
Greg... I'm soooo tempted right now.., mike my Lfs buddy is really an amazing individual he knows the whole history of my tank and everything I've ever put into it and where it's going., he did say that for what I have growing coral wise ( leathers , mushrooms, zoa's etc).. in my tank that I may be fine with the units but his overall view ( and the store ) is that they are alittle anti- led.....so far
They have this truly amazing coral tank that they have tried various lighting on , including led, mh ., and t 5's.. He said that some corals in that tank didn't like the mh and that some seemed happy with the led but overall for that tank the t5's worked best., so who knows? Trial and error I guess.
I'm sure that every lighting system has it's ups and downs.., maybe some might do this but not that.., all I know is that I like the look.... Alot.
I suppose if I did get these units and for some reason I didn't like them ., then I have my t5 unit that I could reuse .., someday I'll get another tank so I'm not too worried about it going to waste.
Maybe , like you ... If I got this unit(s) I'd only keep what grows under it.... And not try to grow things that it doesnt like...How do you fish react to the light?
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Old 08-02-2011, 02:19 PM   #19
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Well said. There is nothing natural about a tank stuffed full of SPS corals. They don't grow that way on the reef and mixing corals from all over the planet makes you have to run activated carbon and other measures that just aren't sustainable. For you or the coral. It becomes a display garden, not a real reef. Even gardeners are careful about mixing plants from different regions. Life is about compromise (something politicians could benefit from) and so is your reef tank. I am eventually going solar for power generation, so MH is defiantly not in the picture.
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Old 08-02-2011, 02:29 PM   #20
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Quote:
Originally Posted by Dary421

Greg... I'm soooo tempted right now.., mike my Lfs buddy is really an amazing individual he knows the whole history of my tank and everything I've ever put into it and where it's going., he did say that for what I have growing coral wise ( leathers , mushrooms, zoa's etc).. in my tank that I may be fine with the units but his overall view ( and the store ) is that they are alittle anti- led.....so far
They have this truly amazing coral tank that they have tried various lighting on , including led, mh ., and t 5's.. He said that some corals in that tank didn't like the mh and that some seemed happy with the led but overall for that tank the t5's worked best., so who knows? Trial and error I guess.
I'm sure that every lighting system has it's ups and downs.., maybe some might do this but not that.., all I know is that I like the look.... Alot.
I suppose if I did get these units and for some reason I didn't like them ., then I have my t5 unit that I could reuse .., someday I'll get another tank so I'm not too worried about it going to waste.
Maybe , like you ... If I got this unit(s) I'd only keep what grows under it.... And not try to grow things that it doesnt like...How do you fish react to the light?
T5s are very good lights. I would use them before going back to MH. But if you want SPS corals, you may want to use something other than LED for now. I have had spectacular growth with softies and LPS, but still working on the SPS. But it could be a million things that are slowing my SPS growth, other than the lighting. I truly believe that many of my issues have been from underestimating how much light I have now. I am considering mixing LED with T5. might be the best of both worlds. I have put my Kalkwasser reactor back on line to see if that doesn't jazz up the SPS growth as it has in the past.
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