Minimalistic multichip DIY LED build
- Thread starter maglofster
- Start date
[QUOTEIn looking into the Pacific Sun fixtures I noticed they don't use any white LED's and they supplement with other colors. Sounds interesting... ][/QUOTE]
I have a a predominantly a cree set up and initially like most people I put in too many whites. I was having enormous problems with coral bleaching and recession. I also was running them too hard (concentrating too much on PAR as opposed to spectrum). I then stumbled upon the thread I posted earlier and also did a bit of research and concluded that I had too many white bulbs running too high. I have now taken out a majority of the whites ration 5:1 blues/whites inserted OCW which is basically turquoise, red and Rblue, which when mixed together gives white. I have never looked back corals are now doing great and growing. Corals which had suffered have now recovered.
I have a a predominantly a cree set up and initially like most people I put in too many whites. I was having enormous problems with coral bleaching and recession. I also was running them too hard (concentrating too much on PAR as opposed to spectrum). I then stumbled upon the thread I posted earlier and also did a bit of research and concluded that I had too many white bulbs running too high. I have now taken out a majority of the whites ration 5:1 blues/whites inserted OCW which is basically turquoise, red and Rblue, which when mixed together gives white. I have never looked back corals are now doing great and growing. Corals which had suffered have now recovered.
Got any pictures of your tank with the current lights? I'm trying to figure out the best LED mix for an upcoming build.
danielcassar
Member
http://reefcentral.com/forums/showthread.php?t=2315500
here you go. There is a bit of squabbling within the thread but ignore it and take from it the important parts
here you go. There is a bit of squabbling within the thread but ignore it and take from it the important parts
danielcassar
Member
Ryecoon
New member
The chips are dimmable yes. There are a lot of different optics available, tight beam, wide beam, diffused etc. Most large optics are made of glass.
The efficiency are a bit lower when comparing total wattage, but ease of building, replacing broken LEDs, flexibility, price etc by far makes up for that.
I do help with builds, but I'm in SwedenBut for any that like I can make a total "noob" guide how to make one.
Please send me a Noob guide lol Im eager to learn
TropTrea
New member
From the top down
12@ 470 and 6@ 440 I would swap this ratio and do not see anything between those. So you would have a gap between 450 and 460 whioch is an important area of the spectrum for both growth and florescense
10 Cool Whites at 12,000K I would rather see something in the range of 4,500K to 6,000K which would eliminate the need for red and yellow chips.
375 to 380nm UV yes these are true UV;'s but they do not do anything for corals. Some say they may even burn corals. You should have a chip in the 420 to 420nm if you want to supplement UV.
590 nm does nothing for the corals as with the 520 chip. If anything I'd replace then with a 505 Cyan.
660 nm Red is okay but I think a 620nm is a little more important. Red is good but only moderation excessive red is often said to create two issues Cyan Bacteria and coral bleaching.
Overall I'd be looking at something like this per every 30 gallon of your tank volume with some modifications to the spectrum.
TropTrea
New member
If they are causeing a yellow caste they are defenatly NOT even close to 15,000K. 15,000K should have a blue/turquoise tint..
Electrobes
Montipora type guy
What is currently the best full spectrum (For SPS corals, in particular) 50W multichip (With up to two individually controlled channels max) being sold?
I am basically trying to imitate the Kessil Cannons as simply (I don't want a thousand wires needed to dim individual channels) as possible.
How much trust do people put into the Epistar/Epiled brand nowadays?
I am looking to drive three 50W cannons for my new half cylinder build (With dimming from the Apex VDM). I have the driver(s) and the adjustable lens decided, and still deciding on the heatsinks, but I am so torn about which Multichip to go with...
I was, at first so sure about going with the "Cree Xlamp 50W XTE White(4pcs)+Royal Blue(6pcs) Coral Hybrid Multichip LED Light" but I haven't seen very many reviews on the net about it.
I am basically trying to imitate the Kessil Cannons as simply (I don't want a thousand wires needed to dim individual channels) as possible.
How much trust do people put into the Epistar/Epiled brand nowadays?
I am looking to drive three 50W cannons for my new half cylinder build (With dimming from the Apex VDM). I have the driver(s) and the adjustable lens decided, and still deciding on the heatsinks, but I am so torn about which Multichip to go with...
I was, at first so sure about going with the "Cree Xlamp 50W XTE White(4pcs)+Royal Blue(6pcs) Coral Hybrid Multichip LED Light" but I haven't seen very many reviews on the net about it.
Electrobes
Montipora type guy
Are Epileds and Bridgelux trusted as decent/good LED brands??
That is a very hard question to answer. As brands they are both reputable within their fields. What you have to judge is efficiency of the bulbs. Epileds tend to be good at producing the violet ranges and Bridgelux produce most colours. The downside with Bridgelux compared to Cree or Phillips is their efficiency. You will find that most bridgelux leds tend to be very voltage hungry relative to lumen output and most will not run beyond the 1000mA range.
