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Old 05-12-2012, 01:36 PM   #1
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Light question?

K im upgrading i just bought they said was a 140 but looks like a 125 6ft long 18 wide and i think 24 tall... Anyways i will be putting this one together slowly so i can buy all good equipment. And right now im trying to.understand lighting and dont know much about it par,pur,lum,lux theres alot and i have been researching on ghe topic. Some say watts per gallon is old school and its hard to base that on every light. So what is best leds, mh, vho, etc. and if you all dont care to help me understand the light terms i guess you could call it. That would help me a lot. And thanks
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Old 05-12-2012, 01:55 PM   #2
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I have had and currently have several different types of lighting over my tanks. Over my 125g I have a 12 bulb t5 fixture which is doing a pretty good job of growing my corals. Only downside to t5's is the bulb replacement cost in my opinion. Another option are the led panels you can get on ebay or amazon. I have one of those over my 60g cube and it's very very bright. No bulb replacing either and they last about 10 years or so.

metal halides are still great lights to use but you can have heat issues and still have to replace the bulbs every year or more frequently depending on use.

T5's and LED's will run you about the same amount pretty much, give or take $600 or so. If you have a canopy the led's would be awesome cause you could hang them in there. The T5's are great for a non canopy tank like the one I have.

Hope that helps a bit!
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180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.
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Old 05-12-2012, 04:56 PM   #3
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76x18x24 = 134.63 US gallons close enough to a 140 If it were me i'd go with leds you might look into these 3 will be more than enough
TaoTronics 120W Aquarium Coral Reef Tank White Blue LED Grow Light- White | eBay
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Old 05-12-2012, 06:21 PM   #4
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If u go led I haven't seen them stand on the tank except for the dyi type and maybe a vertex light. All the rest of the high end lights hang and u need to buy multiple fixtures and sync them together. Vertex sells full length fixtures but for a few thousand for the size u need
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Old 05-12-2012, 06:56 PM   #5
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Carey: what leds and t5s would u suggest a vho or ho with the t5s, would the led that Grizz posted work well.

Grizz: do you have those leds you posted and if so how many is needed to go across 6ft.

What would be a good height for a canopy for my the leds ill prolly make one.
Thanks everybody for posting
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Old 05-12-2012, 07:04 PM   #6
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I also have the led fixture that was just linked above. You would need 3 of them to cover the 6 foot tank. I use one for a 24 X24 tank and it's just right. lol

If you have a way to hang them i would say the led's are the best bang for your buck.
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Old 05-12-2012, 07:21 PM   #7
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So how high off the tank should they be and how far apart from each other? Also will they grow most coral soft, lps, sps etc..
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Old 05-12-2012, 08:00 PM   #8
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Yes i have those led's im using 2 over my 90 gal. i hung mine 8 in. above the water i'd go with 3 over a 6 ft tank you can get away with 2 but you'll lose a lot of par in the middle I have Duncan's GSP kenya acan's zoa's mushrooms and 2 nems (sebae and GBTA) under mine and all are doing very well so far (8 months now) These things are bright you so may want to go with the dimmable model as i melted my blasto

Im building a canopy for my 180 im goin to make it 12 in. high and use D clips to hang the led's from it will put them about 7-8 in. above the water
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Old 05-12-2012, 09:43 PM   #9
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Leds are apparently equal to if not better than mh
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Old 05-12-2012, 11:39 PM   #10
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Gizz is there a dimmable model in the same led fixture, and could you define PAR just for knowledge sake... And thanks again everyone
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