i am an experienced SPS keeper and have had this LED unit running for months to see what all the fuss was about and i know what i'm doing when it comes to SPS and how to keep them successfully.
All these corals are wild collected and still acclimating to artificial lighting but i can assure anyone who cares to listen to my opinion that if your corals are all slowly dying under LED's - it isn't the light that's doing it.
........ get your water right before you blame your lights.
My link below shows my mixed reef. It's been up for a year, in that time I've seen massive growth in montis, stylos, birdsnests. My acros are growing, but they've taken a while - I've also just got my Nitrates down below 1 recently so I attribute that to their slow growth more than anything. In that time I've lost 2 corals out of all you see, one monti (because I fried it under the lights,) and one porities (not sure why.)
Tdb320reef, your tanks look great!
I, for one, tried LED's, but ended up switching to MH. I never bought a PAR meter, and I think that they're probably crucial for dialing LED intensity. I've heard, though, that the PAR readings are not to be compared to other lighting (i.e. a 300 reading for LED's is actually stronger than a 300 reading for MH or T5). If that is true, that would maybe explain why others seem to have a hard time.
With that in mind, I have a few questions (maybe these questions should be answered by anyone posting about their success with LED's)
1. How long have you had the LED's over your reefs? (I know you said since the beginning, but a solid time frame could be helpful.)
2. Did you have any problems/issues during any of your experience? If so, what were they? (bleaching, other color issues, no/slow growth, STN/RTN, etc.)
3. How did you solve these problems?
4. What's your PAR readings at 6", 12", and 18"? (You already answered this, yourself, but it would be a great question to answer when others post their success stories)
5. What's your acclimation process?
Just some thoughts!
Even though i don't use LED's over my halide/T5 display i do run a 120W 50/50 blue/white cheapo ebay unit over the forgotten corals section of my sump. There is nearly no circulation in the LED area, just the feed pump outlet and a rattling 250gph 'old fashioned' powerhead plonked in a corner - terrible water movement with lots of dead spots etc.
The tank is 4 months old and i know next to nothing about LED lighting but i see lots of people on here blaming LED's for an inability to keep SPS colored and/or alive.
I'm not really interested in LED's yet but i will say that anyone who can't keep SPS under anything from my non full spectrum LED unit up to the high end full spectrum LED fixtures like radions etc has their hand on it. I don't care one toss if i upset anyone tbh - i am an experienced SPS keeper and have had this LED unit running for months to see what all the fuss was about and i know what i'm doing when it comes to SPS and how to keep them successfully.
All these corals are wild collected and still acclimating to artificial lighting but i can assure anyone who cares to listen to my opinion that if your corals are all slowly dying under LED's - it isn't the light that's doing it. I run the LED's at 100% 10 hours a day. The sump pic is not sharp because i haven't cleaned the glass in 2 weeks so it is crazed with snail grazing tracks, i really don't care about the sump section or the corals in it tbh.
Proof is in the pics
Halide and T5 display:
Blue/white LED sump section:
The colors in both tanks are obviously much better in real life but you can see frags in the LED area and the same corals up above in the display. I really don't get this whole SPS are super hard to keep thing btw - the ones in the sump are in terrible flow conditions, they're not receiving a light spectrum anywhere near full yet they soldier on......... get your water right before you blame your lights.
They look a bit starved, maybe you should feed more?!......
Mo
In general, I've tried to turnover a "new leaf" on the internet, and I hope you understand I don't know you personally, and I'm sure we have way more in common than we have differences, but I'm afraid I feel a need to post an opposing point of view.
My first disagreement is in your characterization of SPS as being easy to keep. In logic the first lesson you learn is that just because you caught a bass next to a log doesn't mean that bass like to live near logs. What I mean is your personal success with a finite sample of SPS is not a clear indication of universal truths. The fact is a large percentage of SPS die each year, and we often have no idea as to why. I am glad that you are finding your skills sufficient to keep lots of SPS healthy, but I don't think it's fair to say that keeping SPS is easy and by allegory implying that people who don't find it easy are inferior.
My second disagreement is regarding LEDs and your analysis again based on one LED and one set of SPS. Many, many individuals have not had the same experience so implying that their failure must be due to poor husbandry is not, I think, fair. You may be right, and in time everyone may come to enjoy the same success with LEDs that you have, but again the sense I get from your post is that those who have failed with LEDs have failed because of something they did and not because of the lights, and that I'm afraid we can't know quite yet.
If my interpretation of what you were saying is inaccurate I hope you will accept my apologies. My ultimate intent is just to make sure everyone has a chance to enjoy the hobby to the best of their abilities without feeling inadequate in what they are doing or not doing.
Subscribed. I def agree about the water quality. Can have t5/mh/led/Sun and if your water isn't right none of it will matter.
I think Water Quality and Nutrition are weighted much higher than light. I have had corals fall into a cave and stay in darkness for months. I have pulled them and starting them at the bottom in a shaded area brought them back to life. If your WQ and Nutrition is all messed up they can go up in flames over night.
In general, I've tried to turnover a "new leaf" on the internet, and I hope you understand I don't know you personally, and I'm sure we have way more in common than we have differences, but I'm afraid I feel a need to post an opposing point of view.
My first disagreement is in your characterization of SPS as being easy to keep. In logic the first lesson you learn is that just because you caught a bass next to a log doesn't mean that bass like to live near logs. What I mean is your personal success with a finite sample of SPS is not a clear indication of universal truths. The fact is a large percentage of SPS die each year, and we often have no idea as to why. I am glad that you are finding your skills sufficient to keep lots of SPS healthy, but I don't think it's fair to say that keeping SPS is easy and by allegory implying that people who don't find it easy are inferior.
My second disagreement is regarding LEDs and your analysis again based on one LED and one set of SPS. Many, many individuals have not had the same experience so implying that their failure must be due to poor husbandry is not, I think, fair. You may be right, and in time everyone may come to enjoy the same success with LEDs that you have, but again the sense I get from your post is that those who have failed with LEDs have failed because of something they did and not because of the lights, and that I'm afraid we can't know quite yet.
If my interpretation of what you were saying is inaccurate I hope you will accept my apologies. My ultimate intent is just to make sure everyone has a chance to enjoy the hobby to the best of their abilities without feeling inadequate in what they are doing or not doing.
I have been running leds for a little more then a year now i can say they are tricky! Here what i found basing on my experience.
I have 10 radions over 400G tank i by last december i was running them at 90%! everything was fine , i had great color. my water wasn't clear and i had bryopsis and cyano so i started coral snow. I was aware that water clearer would mean more par so i lower it down to 80 % changing by the way a little bit of the spectrum, moving it toward the blue. There my problems started!! pales corals burnt tips parameter were kh 8.3, po4 0, nitrates 0 ca 430. I posted a thread about it on the sps keeper forum. I lower lights to 60 % 10 hrs a day and feed more my corals. It has only been 2 days but i see improvement in PE and color. So the learning here for me, sps can take a lot of light but there is a limit with the kind of spectrum we get with leds especialy with low nutrients tank!
That is interesting. So when your water cleared up you had to drop to 60% and feed more to the sps? Amazing it makes the big of a difference ha?
I have been running leds for a little more then a year now i can say they are tricky! Here what i found basing on my experience.
I have 10 radions over 400G tank i by last december i was running them at 90%! everything was fine , i had great color. my water wasn't clear and i had bryopsis and cyano so i started coral snow. I was aware that water clearer would mean more par so i lower it down to 80 % changing by the way a little bit of the spectrum, moving it toward the blue. There my problems started!! pales corals burnt tips parameter were kh 8.3, po4 0, nitrates 0 ca 430. I posted a thread about it on the sps keeper forum. I lower lights to 60 % 10 hrs a day and feed more my corals. It has only been 2 days but i see improvement in PE and color. So the learning here for me, sps can take a lot of light but there is a limit with the kind of spectrum we get with leds especialy with low nutrients tank!
I got a corner tank 190 gallon (link here: http://www.reefcentral.com/forums/showthread.php?t=2274721)
it's lid by LED lights and i got one picture that i could relate to growth (hystrix)
Other pictures can be found in the threat.
Anyhow my findings:
1. Know the lights from the vendor, if you buy at a LFS. So you can adjust to the LED's better.
2. LED's will burn off corals easy
My opinion about leds: Make sure you get good fixtures. Prefferebly with Philips leds when you do DIY since they are better. However cree's are really good too.
Buy a dimmable fixture, i know most are, but it's needed since all new led's will burn the corals when you run them at 100%. I think most corals will do fine at 60-80% lighting. I've seen my acro's turn to light brown, and now lowering the light from 95% to 80% slowly. I don't yet see any corals brown up so they got enough light. Also my LPS on the bottom still get some light shock, even doh they are low and outside the main light.
I'll keep you all posted about my aquarium when needed in the other threat. (link on top). As far as my statement, yes go for led when you get a new tank with good LED's. Or second hand other lighting if you want to save money (when you would buy ATI T5 fixtures they cost the same as a good LED fixture).
Personally i run two pacific sun triton units on the Bali program.
I was thinking carx media. Id be interested if it was a total lose or just specific corals. It looks more like a crash vs a light problem. Hope he will provide detailed experience to prevent the costly mistakes for others moving into this space.