Go Back   Aquarium Advice - Aquarium Forum Community > Freshwater > Freshwater & Brackish - Planted Tanks

Join Aquarium Advice Today
Reply
 
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
 
Old 12-29-2009, 02:46 PM   #1
Aquarium Advice Activist
 
Join Date: Dec 2009
Posts: 140
blue or white? -- Questions on Light bulbs

Quick question: If you get a lighting setup that has two lights in it should you get both blue lights? both white? one of each? Also, just randomly wondering why lights are measured in Kelvin? I mean a light that says 12000k on it doesn't heat up to 12000k degrees, so why is it measured in kelvin? I guess I didn't known kelvin could be a measure of anything other than temperature.
__________________

__________________
Evaunitone is offline   Reply With Quote
Old 12-29-2009, 03:52 PM   #2
AA Team Emeritus
 
Join Date: Oct 2006
Posts: 6,058
Well it depends on a couple of things. If you want a planted tank then you will probably want to shoot for a 6700K bulb. Kelvin in planted aquariums refer to the color temperature of the bulb. If you are not concerned with growing live plants then it is really up to you. I think normal shop lights' (T8's) bulbs are around 10000K and are the really white bulbs. Some people like the look of actinic bulbs (the bluer ones) but they are really for saltwater setups.

Its all up to you really what you prefer. I personally like the look of the 6700K bulbs. I read online somewhere that 6500K is like a summer day (lots of sun), just to give you an idea.

Here is a link to a good article about aquarium lighting (it explains the Kelvin thing some more):
http://www.americanaquariumproducts...._Lighting.html
__________________

__________________
meegosh is offline   Reply With Quote
Old 12-29-2009, 10:59 PM   #3
Aquarium Advice Addict
 
newfound77951's Avatar
 
Join Date: Feb 2006
Location: Jamestown, RI
Posts: 2,112
The Kelvin rating refers to the spectrum of radiation (AKA light) given off by a black body at that temperature....basically a lot of physics jargon.

As meegosh said, what kind of bulbs you use is dependent on the kind of tank you have, with refinements for preference. For a fish only tank (fresh or salt) or a FOWLR, any bulbs will do. For a planted FW tank, 5500-10000K bulbs will work. The lower the number, the warmer the color put out by the lamp. For reef tanks, bulbs with Kelvin ratings higher than 10000K are needed, usually along with some actinic (blue) bulbs, as these replicate the light spectrum at deeper depths on the reef where many of the corals common to aquaria are found.

From what I've seen, most Home Depot (ie household) bulbs are less than 5000K, most around 2100-3300K. House bulbs are much more "yellow" than the bulbs needed to grow plants or corals. If you stuck a 10000K bulb in your living room lamps, you'd think you were in an operating room - the light is very white and not very "homey" feeling. You may find some plant bulbs in Home Depot that have appropriate ratings.
__________________
newfound77951 is offline   Reply With Quote
Old 12-30-2009, 06:22 AM   #4
Aquarium Advice Freak
 
Join Date: Apr 2009
Posts: 258
Quote:
Originally Posted by newfound77951 View Post
The Kelvin rating refers to the spectrum of radiation (AKA light) given off by a black body at that temperature....basically a lot of physics jargon.

As meegosh said, what kind of bulbs you use is dependent on the kind of tank you have, with refinements for preference. For a fish only tank (fresh or salt) or a FOWLR, any bulbs will do. For a planted FW tank, 5500-10000K bulbs will work. The lower the number, the warmer the color put out by the lamp. For reef tanks, bulbs with Kelvin ratings higher than 10000K are needed, usually along with some actinic (blue) bulbs, as these replicate the light spectrum at deeper depths on the reef where many of the corals common to aquaria are found.

From what I've seen, most Home Depot (ie household) bulbs are less than 5000K, most around 2100-3300K. House bulbs are much more "yellow" than the bulbs needed to grow plants or corals. If you stuck a 10000K bulb in your living room lamps, you'd think you were in an operating room - the light is very white and not very "homey" feeling. You may find some plant bulbs in Home Depot that have appropriate ratings.
i got mine at lowes, along with some clip on light fixtures for my 55 gallon, cost me 46 dollars for 120 watts of lighting. the bulbs had a 6700k rating.
__________________
I Suffer from MTS.
Fromthelbc is offline   Reply With Quote
Old 12-30-2009, 11:52 AM   #5
Aquarium Advice Activist
 
Join Date: Dec 2009
Posts: 140
I'm planning to buy my light setup and lights from fishneedit.com or something like that. The light has two lamps and you have the option to get two blue lights, two white lights, or one of each (pink is also an option). So if I want to have a planted freshwater tank, which colors should I get? It sounds like the blue lights are probably actinic and thus I don't want those for a planted tank. So both white? Or should I consider using a pink blulb or two? I can choose either 6700, 10000, or 14000. So what would be the best combination? Two white 10000k lights? ?
__________________
Evaunitone is offline   Reply With Quote
Old 12-30-2009, 01:07 PM   #6
AA Team Emeritus
 
jsoong's Avatar


 
Join Date: Aug 2003
Location: Edmonton, Canada
Posts: 4,222
For best plant growth I would use all 6700. Some like to throw in a 10000 for the bright look - looks brilliant with a white sand substrate.

Personally, I won't go for pink - ugh! Supposed to have the spectrum for some plant, but a full spectrum 6700 has all you need.

BTW - Full spectrum 6700K are common in HD & other hardware store. Usually called Daylight or Full Spectrum bulbs. Phillips make them & I get mine at HD for a fraction of the price of a lfs.
__________________
80 gal FW with 30 gal DIY wet/dry/sump.
9 fancy golds, 1 hillstream loaches, 1 rubber-lip pleco (C. thomasi), 3 SAEs, small school of white cloud minnows, planted.
jsoong is offline   Reply With Quote
Old 12-30-2009, 01:16 PM   #7
AA Team Emeritus
 
Join Date: Oct 2006
Posts: 6,058
I second the 6700k bulbs. The blue, white, and pink bulbs all look weird compared to the 6700k ones. How many Watts is the setup you are looking at? What size tank is it going on?
__________________
meegosh is offline   Reply With Quote
Old 12-31-2009, 06:14 PM   #8
Aquarium Advice Activist
 
Join Date: Dec 2009
Posts: 140
This: T5-ho 3ft / 2LAMP Aquarium lighting is the setup I was hoping to buy. I don't know how to tell how many watts it will be. It'll go on a 20gallon long. Does this seem like it will work?
__________________
Evaunitone is offline   Reply With Quote
Old 12-31-2009, 09:46 PM   #9
AA Team Emeritus
 
jsoong's Avatar


 
Join Date: Aug 2003
Location: Edmonton, Canada
Posts: 4,222
36" T5-HO is 39W. You would have over 5 wpg of T12 equivalent. If you are going for a high light, high tech setup that is a great choice.
__________________
80 gal FW with 30 gal DIY wet/dry/sump.
9 fancy golds, 1 hillstream loaches, 1 rubber-lip pleco (C. thomasi), 3 SAEs, small school of white cloud minnows, planted.
jsoong is offline   Reply With Quote
Old 01-01-2010, 01:53 PM   #10
Aquarium Advice Activist
 
Join Date: Dec 2009
Posts: 140
So I'll be able to grow almost any plants, thats what I want. How high tech am I going to have to be? I know I'll need CO2 and I'm hoping to do that DIY. Other than lights, CO2 and a substrate (I'm thinking eco-complete and pfs) do I need anything else. I have a heater and filters already. What are the disadvantages of a high light setup?
__________________

__________________
Evaunitone is offline   Reply With Quote
Reply

Tags
bulb, bulbs, light

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
What Light bulbs should I get for a T-5 setup divemasterjim Freshwater & Brackish - Planted Tanks 7 09-01-2006 12:45 PM
Does white/light gravel increase ammount of light available? studmaster Freshwater & Brackish - Planted Tanks 3 07-05-2006 11:26 AM
are aquarium light bulbs different from the house light bulb Bubble_B0y General Hardware/Equipment Discussion 4 06-22-2006 10:45 PM
Light Bulbs nycfatcow General Hardware/Equipment Discussion 5 10-29-2005 10:20 PM
PC Light Bulbs mitche8359 Freshwater & Brackish - Planted Tanks 6 09-10-2004 11:28 AM







» Photo Contest Winners







Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

RV & Travel Trailer Communities

Our RV & Travel Trailer sites encompasses virtually all types of Recreational Vehicles, from brand-specific to general RV communities.

» More about our RV Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002-2012 Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 05:31 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2014, vBulletin Solutions, Inc.

Aquarium News Delivered to your Email!

Stay up-to-date with Aquarium News in your inbox!

unsusbcribe at anytime with one click

Close [X]