Metal Halides
- Thread starter josh f
- Start date
mr . salty
Active Member
No they are not all the same.There are double ended ones,mogal socket(most popular),andall diferent wattage and kelvin values. I have heard the new BLUELINE 10,000k bulbs are prone to burn outs and blow up.But the german ones are some of the better bulbs,as are the phillips.
mr . salty
Active Member
SURFERBOY,You mean ACTINIC,not KELVIN color.RIGHT?????
b_ball12_99
Member
I thought or actually learned that Kelvin was the Celcius without any - values starting at 0=absolute zero. Does Kelvin have another value with MH or are they still a measure of temperature?
anynamewilldo
New Member
My understanding is that the kelvin rating refers to the colour temperature (not temperature) I believe a 10,000K bulb would have more red (hotter) than a 6,500K bluer(cooler) bulb.
anynamewilldo
New Member
I had to clip this when I saw it. who knows?
"K", refers to the color temperature of the light measured in oKelvin. A lower Kelvin rating indicates a warmer light source whose spectrum is more towards the yellow end. A higher Kelvin rating indicates a cooler source of lighting that emphasizes the blue end of the spectrum.
"K", refers to the color temperature of the light measured in oKelvin. A lower Kelvin rating indicates a warmer light source whose spectrum is more towards the yellow end. A higher Kelvin rating indicates a cooler source of lighting that emphasizes the blue end of the spectrum.
cveach
Member
The Kelvin or K value is measurement of temp. A Bulb lets say a 5,500k MH will throw mostly red with some yellow. 6,500k you’re talking mostly yellow with some white NOT THAT PRETTY. The 10,000k and above throw almost zero yellow which allow the blue to A) Penetrate that water surface much better and B) Look much more aesthetically pleasing. In theory corals would grow much better under a bulb such as a 6500k with its yellow for zooanthoids. Its Ugly.
[ April 24, 2001: Message edited by: cveach ]
[ April 24, 2001: Message edited by: cveach ]
sonny
Member
If you use actinic lights in addition to the 6500K lights it looks pretty good. The 10,000K lamps are almost double the price. I agree they look better, but since I am going to use VHO actinic with my tank, I'm going to go with 6500K MH. A 400Watt MH lamp that is 6500K costs about $60. A 10,000K lamp costs about $110. I thought I might use two 6500K and one 20,000K over my 135 gallon tank. With that light, I should be able to keep some really colorful SPS corals.
Sonny
Sonny
b_ball12_99
Member
Thought they were more than $60. What is a good book that has diagrams and explains lighting that is on the cheap side? I NEED to know this kinda info.
