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Reply With QuoteHi Mman!
Yes MH bulbs are available in different "colors". 6500K, 10k, 12K, 14K, 20K. The K stands for kalvin... It represents the "color" of light emitted by the bulb. 6500K are more yellow looking and are closer to the sun. As you move up in kalvin the color appears to be more blue. It corelates directly to the color spectrum. 700nm are red down to 400nm blue.... Blue or 400nm (20K bulbs) penetrate the water much deeper than 6500K and are better for a deeper tank. I have also seen charts that show that a majority of corals do better under 20k. The down fall is that our eyes won't be able to pick up the oranges, reds, yellows as well with this bulb so it should be supplimented with 6500k or 10K VHO's or PC bulbs... Also I would go with 250W MH as they are easier to find as well as less expensive then 150W set ups....
That was kind of a crash course that my not be explained all that well. Maybe someone else can chime in and elaborate....
Here is an artical by Sanjay Joshi on lighting: http://www.advancedaquarist.com/2005/8/aafeature
There are also many other articals about lighting on that site you just need to check the past articals.....
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Thread: MH bulb 150Watt
- 09-09-2005 08:00 AM #1Just Moved In
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MH bulb 150Watt
Hi , ignorance about light . . .
is there different kind of MH bulb , in terms of the light emitted . I saw some which is white with a little blue . And other is like sunlight , , glowing in orangy and then into normal bright form.
Are those which have little blue in them consider as actinic light ?
Which is better ?
Thanks for reading
- 09-09-2005 12:51 PM #2Moderator
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Greg
14 gallon BioCube, modified to accept Maxijet 600
75 gallon reef with 29 gallon sump/fuge, Barr Aquatic Skimmer, Iwaki 100, Mag 7 return, Hamilton T-5 lighting
375 gallon tank....... SOLD
675 gallon wood tank in design phase.
Over time science has shown that the simplest answers are usually the correct ones.......
- 09-10-2005 07:58 AM #3Keeper of Willis
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Originally Posted by The R/C Man
Thanx for the help Greg!!!
Kalvin used to live next door to me tho, I think you meant Kelvin.
400 Gallon Reef Log
Rome wasn't built in a day---neither is a reef
Willis--1998-2009---I will miss you.
- 09-10-2005 08:13 AM #4Moderator
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That's what happens when you post something and your not really awake yet....
Greg
14 gallon BioCube, modified to accept Maxijet 600
75 gallon reef with 29 gallon sump/fuge, Barr Aquatic Skimmer, Iwaki 100, Mag 7 return, Hamilton T-5 lighting
375 gallon tank....... SOLD
675 gallon wood tank in design phase.
Over time science has shown that the simplest answers are usually the correct ones.......
- 09-10-2005 08:19 AM #5Keeper of Willis
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Originally Posted by The R/C Man That's what happens when you post something and your not really awake yet....
What in the heck are you doing awake now???? , for that matter, what am I doing awake now??????
By the way Mman, Greg gave some great advice, and links. Right on man
400 Gallon Reef Log
Rome wasn't built in a day---neither is a reef
Willis--1998-2009---I will miss you.
- 09-10-2005 12:00 PM #6Just Moved In
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light
Hi thanks alot Greg for the information/advise ..
appreaciates that .
- 09-10-2005 04:25 PM #7Moderator
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Mman,
Your welcome! I hope it helped....
Hey Charlie!
I had to get up early today to take my folks to the airport.... It was nice they where here but I am glad to see them go.... Greg
14 gallon BioCube, modified to accept Maxijet 600
75 gallon reef with 29 gallon sump/fuge, Barr Aquatic Skimmer, Iwaki 100, Mag 7 return, Hamilton T-5 lighting
375 gallon tank....... SOLD
675 gallon wood tank in design phase.
Over time science has shown that the simplest answers are usually the correct ones.......
- 09-10-2005 04:28 PM #8Keeper of Willis
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Originally Posted by The R/C Man Mman,
Your welcome! I hope it helped....
Hey Charlie!
I had to get up early today to take my folks to the airport.... It was nice they where here but I am glad to see them go....
I hear ya there!!!!!!
Thanx again for the cover, I appreciate it.400 Gallon Reef Log
Rome wasn't built in a day---neither is a reef
Willis--1998-2009---I will miss you.
- 09-12-2005 11:40 AM #9Just Moved In
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Mh
Hi
I have bought an ignitor to fix my MH .. haha ... at the same time bought a 6500K bulb .. and it work fine ... [ for testing the ignitor ] ;p
Maybe will be changing both MH again to 14k bulb ...
Originally Posted by The R/C Man Mman,
Your welcome! I hope it helped....
Hey Charlie!
I had to get up early today to take my folks to the airport.... It was nice they where here but I am glad to see them go....
- 09-12-2005 11:44 AM #10Just Moved In
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Cost
cost of bulb
what is the cost of bulb says 6500k 10k 14k .
how much is selling at your country ?
Bought my osram 6500k bulb at $SGD30
just curious ...
- 09-12-2005 12:24 PM #11New in Town
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^ about $79.99
AREA69
- 09-12-2005 02:33 PM #12Moderator
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I think our XM's were $61 but they are 250w DE's.
- 09-12-2005 11:51 PM #13Just Moved In
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hmmm .. okie .. thanks for sharing
- 09-13-2005 12:09 PM #14Moderator
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TelX,
Area 69? What is it?Greg
14 gallon BioCube, modified to accept Maxijet 600
75 gallon reef with 29 gallon sump/fuge, Barr Aquatic Skimmer, Iwaki 100, Mag 7 return, Hamilton T-5 lighting
375 gallon tank....... SOLD
675 gallon wood tank in design phase.
Over time science has shown that the simplest answers are usually the correct ones.......
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