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Old 11-11-2011, 11:33 AM   #1
spendsitwell
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LED lighting needed for 75 gallon


I have a 75 gallon that I have corals, fish and liverock in. Currently I have power compacts on it. I am running a total of 6 65w bulbs. 2 10k white, 2 50/50 and 2 actinic. I then have a stip of moonlights. I really love the way the tank looks with this combination. I am looking to upgrade my lights. I would like to upgrage to the LED lights. I am looking for one or two fixtures that can sit on top of the tank. I would like something that is completely built already as I am not very good with putting everything together.

Can someone please tell me exactly what I would need to keep my tank healthy and looking about the same as I have it now after switching to LED's? I am so confused on how to calculate the lumens and watts I need. I always went by the 3-5 watts per gallon rule before. I have no idea what the lumens per gallon are and I know that there is no specific rule to follow.

Any help would be great. Links to specific fixtures would be even better. LOL
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Old 11-11-2011, 12:00 PM   #2
schooleyosis
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Here is what I'm ordering:

http://www.shop.reeffiltration.com/c...c?categoryId=5

I am ordering 2 in the 14k color for my 120g. I've heard nothing but GOOD about these lights. My other consideration that I really like are the AquaUFO lights:

http://shop.sunshine-systems.com/pro...c?productId=19

The AquaUFO lights will have dual cords soon, but not as of yet. I emailed their customer service and they said the dual cord version will be out in Mid-December.

These are my 2 top choices. Just have to decide on which ones to get....
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Old 11-11-2011, 01:29 PM   #3
08TRDOFFROAD
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If you are set on LED's, save a bunch of money and DIY it! It isn't that difficult! Look at what rapidled has to offer! I would recommend the 48 LED dimmable kit with 8 additional LED ala carte for a total of 56 LED's with 40-60 degree optics (depending on how high above the tank you are hanging the fixture). They are even offering a solderless kit if you are afraid of assembling them. You will get much more bang for you buck with these than any prefabbed LED fixture!
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Old 11-11-2011, 01:31 PM   #4
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Quote:
Originally Posted by 08TRDOFFROAD View Post
If you are set on LED's, save a bunch of money and DIY it! It isn't that difficult! Look at what rapidled has to offer! I would recommend the 48 LED dimmable kit with 8 additional LED ala carte for a total of 56 LED's with 40-60 degree optics (depending on how high above the tank you are hanging the fixture). They are even offering a solderless kit if you are afraid of assembling them. You will get much more bang for you buck with these than any prefabbed LED fixture!
I'm actually looking into this as well. IF I buy a fixture it would be one of the two that I mentioned. But I am more a of DIY person so I might be going this meathod. All depends on cost vs. time!
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Old 11-11-2011, 01:33 PM   #5
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Most kits can be assembled in a few hours if you have everything gathered up. I enjoy the satisfaction of building/DIY'ing things, so the hours spent on assembling the kit I would even go as far considering them therapuetic...much like working on my truck! lol
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Old 11-11-2011, 01:34 PM   #6
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Most kits can be assembled in a few hours if you have everything gathered up. I enjoy the satisfaction of building/DIY'ing things, so these hours of assemble I would even go as far considering them therapuetic...much like working on my truck!
Well put! I just got off looking at rapidled again. Now I am once again torn on what to do... Ahhhhhh. lol
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Old 11-11-2011, 01:37 PM   #7
08TRDOFFROAD
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Here are the kits I mentioned. Then just add 8 LED's in the colors of your choice to run all four drivers at 14 LED's a piece.

http://www.rapidled.com/servlet/the-...ium-LED/Detail

Solderless (you would need 2-24 LED kits)

http://www.rapidled.com/servlet/the-...etrofit/Detail
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Old 11-11-2011, 01:43 PM   #8
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[quote=08TRDOFFROAD;1969959]Here are the kits I mentioned. Then just add 8 LED's in the colors of your choice to run all four drivers at 14 LED's a piece.

http://www.rapidled.com/servlet/the-...ium-LED/Detail


That's a great idea. What did you use for a heat sink? I think I can build my own for about $100-$200 less and have the option to dim and to create the look that I want. Meaning I can pic the optional color of the LED's to make the hue I want to see.
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Old 11-11-2011, 01:51 PM   #9
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That's a great idea. What did you use for a heat sink? I think I can build my own for about $100-$200 less and have the option to dim and to create the look that I want. Meaning I can pic the optional color of the LED's to make the hue I want to see.
I haven't actually built mine yet...Just been doing A LOT of research on what options are out there. But I will likely use two 4.25" x 16" heatsinks (from Heatsinkusa) or see what my LHS has as far as aluminum tubing or C-channel that would be adequate. I am definitely set on using rapidLED for my source for the LED kit! (Just saving the last of the funds needed to get going on the project, I also might be switching over to a 90 g. if I do all my plans will change.)

Your tank will likely need more LED's than what I mentioned above for the OP's 75 g. I'd go with a 48 LED dimmable kit and a 12 LED dimmable kit and add ten LED's ala carte (to fill the driver's to capacity). The optics depends on how high above the water the lights will be. I think you'd be okay using either the 60 or 80 degree lenses, depending on how high off the tank the fixture will be.
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Old 11-11-2011, 01:57 PM   #10
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Originally Posted by 08TRDOFFROAD View Post
I haven't actually built mine yet...Just been doing A LOT of research on what options are out there. But I will likely use two 4.25" x 16" heatsinks (from Heatsinkusa) or see what my LHS has as far as aluminum tubing or C-channel that would be adequate. I am definitely set on using rapidLED for my source for the LED kit! (Just saving the last of the funds needed to get going on the project, I also might be switching over to a 90 g. if I do all my plans will change.)

Your tank will likely need more LED's than what I mentioned above for the OP's 75 g. I'd go with a 48 LED dimmable kit and a 12 LED dimmable kit and add ten LED's ala carte (to fill the driver's to capacity). The optics depends on how high above the water the lights will be. I think you'd be okay using either the 60 or 80 degree lenses, depending on how high off the tank the fixture will be.
I just priced it all out, minus the heat sinks, and I'll only be like $50 cheaper than buying a pre-built fixture. I like the idea of building my own and having a dimmable driver for each circuit but the cost factor of me doing it on my own vs. having a 2 year warranty is where I'm torn. I like the thought of plug and play with a warranty yet I love building things on my own and having the satisfaction of knowing "I built that"... Decisions, decisions. Glad I'm still just building my tank and don't need to pull the trigger yet.
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Old 11-11-2011, 02:00 PM   #11
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IMO, you are not going to see the PAR out of those premade fixtures that you would out of a rapidled kit with optics. Like I said, you willl get more bang for your buck out of the rapidled kits.
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Old 11-11-2011, 02:04 PM   #12
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Originally Posted by 08TRDOFFROAD View Post
IMO, you are not going to see the PAR out of those premade fixtures that you would out of a rapidled kit with optics. Like I said, you willl get more bang for your buck out of the rapidled kits.
You've got my attention now. More research is needed. Thanks! I like how we turned this thread into our own discussion. Oooops!
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Old 11-11-2011, 02:06 PM   #13
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It is all LED related...hopefully the OP will find our discussion helpful! lol
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Old 11-11-2011, 02:18 PM   #14
schooleyosis
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Originally Posted by 08TRDOFFROAD View Post
It is all LED related...hopefully the OP will find our discussion helpful! lol
Haha, true! Why use a 4" wide heatsink and not 1"??? I understand a better heatsink is better. Do you plan on running 2 LED's side by side down that 16" length?
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Old 11-11-2011, 02:26 PM   #15
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I will be doing two 'pendants' with 14 LED's on each. I will likely do something like this.

RB RB W RB RB
W RB RB W
RB RB W RB RB

Of coursen this will all change if I end up upgrading to a 90 g.!
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Last edited by 08TRDOFFROAD; 11-11-2011 at 02:32 PM..
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