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Shayne View Drop Down
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Joined: May 13 2010
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    Posted: July 04 2010 at 5:45pm
So, has anyone thought of trying 3 or 4 of these over a tank? I'm far from knowledgeable about this topic but I saw these at Lowe's and started wondering if they'd work for a tank. I've also seen blue ones at Marine Depot for around $100.

These are PAR 38 and last 25000 hours: http://www.lowes.com/pd_119680-3-78605_0_?productId=3110471&Ntt=led%20bulb&Ntk=i_products&Ns=p_product_price|0&pl=1&currentURL=/pl__0__s?Ntk=i_products$rpp=15$Ntt=led%20bulb$Ns=p_product_price|0$identifier=

These are PAR 30 and last 50000 hours: http://www.lowes.com/pd_122514-3-78602_0_?productId=3110491&Ntt=led%20bulb&Ntk=i_products&Ns=p_product_price|0&pl=1&currentURL=/pl__0__s?Ntk=i_products$rpp=15$Ntt=led%20bulb$Ns=p_product_price|0$identifier=


Edited by Shayne - July 04 2010 at 5:48pm
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pgravis View Drop Down
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Points: 763 		Post Options Post Options   Thanks (0) Thanks(0)   Quote pgravis Quote  Post ReplyReply Direct Link To This Post Posted: July 04 2010 at 6:18pm
I saw these last time I was at lowes, I'm pretty sure they are only like 3500 K, which is the wrong spectrum for what we need, I think its even too low for a fuge light.   for a comparison the metal halide bulb I have is 14000 K, some even use 20000 K.   Which all translates into more blue light, less red light (in my limited, oversimplified mind!)  Maybe one day they will increase the spectrum.  I think compact fluorescent bulbs (the twisty kind) had the same progression and now we can get them in like 8000 k.

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kellerexpress View Drop Down
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Points: 1315 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kellerexpress Quote  Post ReplyReply Direct Link To This Post Posted: July 04 2010 at 8:06pm

Ya I think those are the wrong spectrum, you would need blue to balance the color out. and they dont seem like they would cover that big of an area. I wouldnt waste my money on them, I would buy something that works.  I have a par38 LED spotlight from nano tuners over a 12 gallon, it has 5 led's,  2 white and 3 blues, for a 20k look. Looks great, thread can be found here. http://www.utahreefs.com/forum/forum_posts.asp?TID=41486

Only drawback is that they only cover a 12" by 12" area, so for a larger tank you would def need more than one lamp.
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Shayne View Drop Down
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Points: 527 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Shayne Quote  Post ReplyReply Direct Link To This Post Posted: July 04 2010 at 8:28pm
I wasn't really planning on using them on my tank. I just figured I'd check to see if anyone else had thought of it.

I am considering using one for my refuge though. Would it work?
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Mark Peterson View Drop Down
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Points: 21436 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Mark Peterson Quote  Post ReplyReply Direct Link To This Post Posted: July 05 2010 at 9:23am
Still too expensive, and probably not the best color for marine algal growth.

For the Refugium, I would stick with the $7 PC twist bulb (daylight color) in the $5 cone reflector.

I know a guy that uses the twist PC's in combination with actinic fluorescent tubes. He is the most productive coral farmer in St. George.
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