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Lighting Please use this forum for bulbs/fixtures/techniques etc.

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  #1  
Old 08-04-2017, 01:42 PM
Johnsons reef Johnsons reef 目前離線
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Default T5 advice

I'm using T5s for first time on my new tank got a 8 tube 54w unit and I'm needing advice on tube combs iv read a bit but most say it's down to personal preference so a good starting point a can tweak later. And also read tubes need changing 9-12 months is there any signs to look for when the tube are getting ready for a change?
Cheers
Martin
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  #2  
Old 08-04-2017, 06:17 PM
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I use six blue plue and two white or coral plus
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Old 08-05-2017, 12:32 AM
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G.Alexander G.Alexander 目前離線
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Hello Martin, with 8 bulbs this is the combination of korallenzucht bulbs I would use:

4 x NewGeneration (white)
3 x BluePlus (blue)
1 x FijiPurple (purple)

Alternatively:

5 x NewGeneration (white)
2 x BluePlus (blue)
1 x FijiPurple (purple)

G.Alexander
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Old 08-05-2017, 04:24 AM
Pandy Pandy 目前線上
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Hi Martin,

I personally use ATI bulbs and my combination includes

4x B+
3x ABS
1x Actinic

I'll be aiming to change mine within an 8-9 month period, but the plan is the change two bulbs at a time and do a pair every month or let all of the bulbs run for 4 months, then on month 5, 6, 7 and 8 swap out a pair each month, then let them run for 4 months again and carry on the cycle. That way, at least in my mind, I'm changing the bulbs and PAR output consistently, rather than letting all tubes degrade and replace with fresh in one go.
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  #5  
Old 08-05-2017, 01:59 PM
Johnsons reef Johnsons reef 目前離線
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Thanks for the replys I'll have a look and get some ordered. Is there any specific order front to bk for the bulbs or doesn't it matter? Is there any signs when the bulbs are ready for a change any thing to look for or its it just a drop off in par unnoticeable to the eye without a par meter?
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  #6  
Old 08-12-2017, 12:53 PM
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Michal Michal 目前線上
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Hi Johnson's Reef,

Generally T5 bulbs lose around 30% PAR after 9 months of use 8-10 hours a day.
You won't notice it with your eye because it's slow process. But your SPS corals will start to lose/change coloration.

If you have LPS/Softies tank then you may keep your bulbs much longer as they are not so demanding.

/Edit

Oops, I noticed that you asked in May
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Old 09-08-2017, 06:02 PM
naecO.rM naecO.rM 目前線上
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Quote:
Originally Posted by Michal View Post
Hi Johnson's Reef,

Generally T5 bulbs lose around 30% PAR after 9 months of use 8-10 hours a day.
You won't notice it with your eye because it's slow process. But your SPS corals will start to lose/change coloration.

If you have LPS/Softies tank then you may keep your bulbs much longer as they are not so demanding.

/Edit

Oops, I noticed that you asked in May
Hi, do you have any records or links about 30% of PAR loosing for T5?
It's very interesting how do T5s progress during of 3-6-9-12 months time.
Cheers.
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  #8  
Old 09-08-2017, 06:06 PM
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Michal Michal 目前線上
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This test was repeated multiple times around the world.
Here is one of the earliest and most popular: http://archiv.korallenriff.de/Lichttest/T5-1.pdf
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  #9  
Old 09-09-2017, 08:18 AM
naecO.rM naecO.rM 目前線上
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Quote:
Originally Posted by Michal View Post
This test was repeated multiple times around the world.
Here is one of the earliest and most popular: http://archiv.korallenriff.de/Lichttest/T5-1.pdf
Thanks a million!
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