| General Reef Discussion In this forum we discuss issues related to keeping marine and reef aquariums in a friendly flame-free environment. |
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03-06-2007, 06:23 PM
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#1
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Shark
Join Date: May 2006
Location: Kentucky
Posts: 3,170
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is 20,000k better thans 10,000k?
I was wondering If I took one of my 10,000k 150 watt mh and added a 20,000k If that would help the color of the tank?
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Joe Henderson
210 aga, 24 gallon nano(built In) 60 gallon refugium with sump 
& Now 75 Reef at work
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03-06-2007, 06:25 PM
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#2
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The Bitter Mod
Join Date: Apr 2005
Location: Atlanta
Posts: 5,417
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It would change the color some, but you will also lose par.
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03-06-2007, 06:40 PM
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#3
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Join Date: Mar 2006
Location: spartanburg, south carolina
Posts: 4,675
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Joe, weren't you having trouble or doubts about your light strength? Keep the 10K to get the extra par. Add some T5HO actinics to balance the color and add some par. JMHO
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03-06-2007, 07:06 PM
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#4
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Candy Pirate
Join Date: Mar 2006
Location: someplace cold
Posts: 3,746
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agreed, 20k will make the corals POP, but you'll get next to no growth
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Why is that toy on your head?
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03-06-2007, 07:07 PM
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#5
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Learn something every day
Join Date: Mar 2004
Location: Carson Valley Nevada
Posts: 564
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Just tagging on and not wanting to Hi-jack but I know the color temp of the bulbs we pick are to please OUR eyes. But what color gives the best growth? What do coral farms use??
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 Mike
VP Sierra Reefers Club
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03-06-2007, 07:09 PM
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#6
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Candy Pirate
Join Date: Mar 2006
Location: someplace cold
Posts: 3,746
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they probably use 10k for growth and 20k for pics
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03-06-2007, 07:18 PM
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#7
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I'm sorry.......
Join Date: Apr 2006
Location: South West Florida
Posts: 1,704
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I use 14K and very happy with growth and color!
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03-06-2007, 07:25 PM
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#8
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The Bitter Mod
Join Date: Apr 2005
Location: Atlanta
Posts: 5,417
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Quote:
Originally Posted by TahoeMtn
Just tagging on and not wanting to Hi-jack but I know the color temp of the bulbs we pick are to please OUR eyes. But what color gives the best growth? What do coral farms use??
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Generally the higher the kelvin rating the lower the par. Lower par means less/slower growth.
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We will teach our twisted speech
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We will train our blue eyed men
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03-06-2007, 07:28 PM
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#9
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Candy Pirate
Join Date: Mar 2006
Location: someplace cold
Posts: 3,746
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but some 14-16k bulbs have less par than 20k
I learned that one the hard way, as soon as my 14k bulb is used up, I'm switching to 10k with actinic supliment
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03-06-2007, 07:29 PM
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#10
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The Bitter Mod
Join Date: Apr 2005
Location: Atlanta
Posts: 5,417
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Quote:
Originally Posted by know-it-all
but some 14-16k bulbs have less par than 20k
I learned that one the hard way, as soon as my 14k bulb is used up, I'm switching to 10k with actinic supliment
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Hence the use of generally.
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We will teach our twisted speech
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We will train our blue eyed men
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03-06-2007, 07:31 PM
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#11
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Candy Pirate
Join Date: Mar 2006
Location: someplace cold
Posts: 3,746
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Quote:
Originally Posted by theplatypus
Hence the use of generally.
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ya I saw that, just pointing out what was left untyped
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Why is that toy on your head?
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03-06-2007, 07:41 PM
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#12
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I know nothing!
Join Date: Jan 2004
Location: New Hampshire
Posts: 590
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Question: PAR? what is that? Didn't someone start a Acronym list once?
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03-06-2007, 07:43 PM
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#13
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The Bitter Mod
Join Date: Apr 2005
Location: Atlanta
Posts: 5,417
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Quote:
Originally Posted by cdemeritt
Question: PAR? what is that? Didn't someone start a Acronym list once?
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photosynthetic active radiation
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We will teach our twisted speech
To the young believers
We will train our blue eyed men
To be young believers
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03-06-2007, 09:00 PM
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#14
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I'm sorry.......
Join Date: Apr 2006
Location: South West Florida
Posts: 1,704
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Here is my tank with 2 - 250 Watt HQI 14K and 2- 54 Watt T-5's
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03-06-2007, 09:57 PM
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#15
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Just some guy, you know?
Join Date: Sep 2005
Location: West of Dimples
Posts: 18,416
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Quote:
Originally Posted by know-it-all
but some 14-16k bulbs have less par than 20k
I learned that one the hard way, as soon as my 14k bulb is used up, I'm switching to 10k with actinic supliment
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This is very true,.. Like the XM15K for example, less par than the XM20K.
But I'll be sticking to my XM10K's,.. par through the roof!
Whiskey
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