Go Back   Aquarium Advice - Aquarium Forum Community > General Aquarium Forums > General Hardware/Equipment Discussion
Click Here to Login

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 06-27-2005, 11:23 PM   #1
Aquarium Advice Regular
 
Join Date: Feb 2004
Location: Santa Barbara
Posts: 79
PC bulb question

I read over in the planted tanks forum (considering ditching my chiclids for a planted tank) that PC bulbs are good untill they go out, because the gases inside don't break down. Over in this forum I've read they are only good for 6-9 monthes. What is the truth about PC bulbs? I would like to know since I use them on both my tanks and don't want to be buying new bulbs all the time if it is not necessary. Thanks for any info.

Justin
__________________

__________________
Oafboy182 is offline   Reply With Quote
Old 06-27-2005, 11:25 PM   #2
Moderator Emeritus
 
Join Date: Dec 2002
Location: Franklin, TN
Posts: 3,968
I do mine every 12 months in my planted and 9 months in my reef and do notice a significant increase in growth when I replace them in both tanks.l
__________________

__________________
Bearfan is offline   Reply With Quote
Old 06-28-2005, 08:30 AM   #3
AA Team Emeritus
 
Join Date: May 2002
Location: Virginia
Posts: 2,256
Send a message via ICQ to fishfreek Send a message via AIM to fishfreek Send a message via MSN to fishfreek Send a message via Yahoo to fishfreek
Replace them every 9 months I do. I have had this arguement with FW folks before whom insist that PC bulbs just dont wear out and I have given up as its a lose lose situation. Both parties know they are right and that never works out good.

In the saltwater world there is a noticable difference between bulbs that are 9 months old and new bulbs over a tank. The higher K bulbs will slowly fade into lower K spectirum of light output as the bulbs age.

If you doubt their has been a noticable change I suggest the following. If your tank has bulbs that are side by side I suggest changing out one with a new bulb of the same K rating as the old bulbs. Then look at the tank with one side having anew bulb and one side having an old bulb. If you dont have that ability then I would take a photo of the tank with the old bulbs and then take a photo fo the tank with the new bulbs. Preset the white balance with the old bulbs and I suspect you will be amased at the differences between the two images that would have only been taken moments apart.
__________________
Remember dont tap the glass, your fish will think you're an idiot -Anonymous mother

Check out our articles area. 30+ Aquatic articles for your enjoyment
Are you in or around the Shenandoah Valley area? If so click here to join our regional forum.
fishfreek is offline   Reply With Quote
Old 06-29-2005, 01:48 PM   #4
Aquarium Advice Regular
 
Join Date: Feb 2004
Location: Santa Barbara
Posts: 79
Thanks for the info. I have a new fixture coming any day now and will do a comparison test. I am curious to see the results.
__________________
Oafboy182 is offline   Reply With Quote
Old 06-30-2005, 05:06 AM   #5
Aquarium Advice Addict
 
Join Date: May 2005
Location: Central Kentucky
Posts: 6,015
Send a message via AIM to greenmaji
e-bay is selling CF bulbs for real cheap if you get 6 at a time.. like around $5 a bulb.. I think its safe to change your bulbs out now if cost is what was stopping foks before..
__________________
greenmaji is offline   Reply With Quote
Old 06-30-2005, 10:29 AM   #6
Aquarium Advice Addict
 
Join Date: Dec 2003
Location: Nebraska, USA
Posts: 6,703
Here's the situation:
in a FW planted tank, the spectrum degradation isn't that bad...the plants still get what they need, until the bulb stops working.

in a SW reef tank, the organisms are MUCH more sensitive to loss of spectrum, and after 9-12 months, its to the point it has a negative impact on the ones that need good lighting. You wouldn't see problems with low light inverts like mushrooms...but stoney corals, and anemones would surely feel it, and you'd start seeing an increase in algae in the tank, as it's far more opportunistic about it's lighting needes.

So really, BOTH sides are right...but they're comparing apples to oranges.
__________________

__________________
Former advisor and planted tank geek...life's moved on though.
malkore is offline   Reply With Quote
Reply

Tags
bulb

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
bulb question justsomedude89 Freshwater & Brackish - Planted Tanks 3 09-17-2008 05:18 PM
bulb question darron863 General Hardware/Equipment Discussion 0 03-07-2007 07:31 PM
50/50 bulb Question General Hardware/Equipment Discussion 6 06-19-2005 05:37 PM
Bulb Question Yuri General Hardware/Equipment Discussion 8 05-02-2005 06:19 PM
bulb question stumpy Saltwater Reef Aquaria 3 01-04-2004 08:19 AM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 12:22 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.