Go Back   Aquarium Advice - Aquarium Forum Community > Saltwater and Reef > Saltwater Reef Aquaria
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 01-05-2003, 07:37 PM   #1
Aquarium Advice Activist
 
Join Date: Nov 2002
Location: Maine , USA
Posts: 144
hey Guess what ? Another lighting question !

Okay, I've been reading about lighting for weeks now.....and I am now more confused than I was when I started. As I research corals I find most sites rate them on how much light they need, except they only say low , medium or high lighting requirements(or combinations. ie. low to medium). WHAT DOES THAT MEAN ??? Ahhhhhh.........Drives me crazy. Most people seem to recommend Metal Halide lighting. Usually one or two 175 watt or 250's. so my question and one i can't seem to get an answer to is what is the difference in say 350 watts of metal halide and 350 watts of VHO or power compact. As it relates to the corals that is. I am aware they provide different looking light. This all started as a FOWLR and now that I've been researching I 'm sure I'll want some corals and inverts, probably would like a clam as well. As I'm sure is the same as most I don't have a bottomless wallet. I am very seriously considering a 440 watt 4-48" tube VHO kit from Hellolights.com ($161.00)and building my own canopy. I'm not crazy about metal halides because of the cost heat and space the take up and the (need ?) to add additional NO or VHO actinic lighting so I've been leaning toward VHO. This will be over a standard All-glass 75 (or a 55 if I can't convince the wife the 75's the way to go.) So to boil things down, how many watts of VHO are required for corals with "high" lighting requirments or is VHO just not enough ?

Thanks
__________________

__________________
I hope someday to be the person my dog thinks I am!
vermonter310 is offline   Reply With Quote
Old 01-06-2003, 11:04 PM   #2
Aquarium Advice Apprentice
 
Join Date: Jun 2002
Location: Southern California
Posts: 16
Different types of lighting do different things. For example, Metal halide bulbs are very intence...but the light from them wont penetrate the water very deep. On the other hand PC lightbulbs have a deep penetration.

Corals need to have atleast 3-5 watts per gallon. This is the same for whatever type of lighting you have. If you get the VHO lights you will have 440/75 = 5.88 watts per gallon. That is what I would consider high.

On a personal note. I have never used VHO lighting. But I am pretty darn happy with my PC lights.

Hope this helped.
__________________

__________________
http://www.fishhelpcentral.com
saltyfishboy is offline   Reply With Quote
Old 01-06-2003, 11:42 PM   #3
AA Team Emeritus
 
Join Date: May 2002
Location: Fort Collins, Colorado
Posts: 1,022
Send a message via AIM to Anemoneman Send a message via Yahoo to Anemoneman
Quote:
Metal halide bulbs are very intence...but the light from them wont penetrate the water very deep. On the other hand PC lightbulbs have a deep penetration.
Would you post the resources you base that claim on? I haven't had the same experience.

Mark
__________________
Anemoneman is offline   Reply With Quote
Old 01-07-2003, 12:07 AM   #4
AA Team Emeritus
 
michealprater's Avatar
 
Join Date: Oct 2002
Location: Highland , IL
Posts: 2,311
Send a message via Yahoo to michealprater
im also curious on that. I dont see why one type of lighting would penitrate deeper that the other.
__________________
michealprater is offline   Reply With Quote
Old 01-07-2003, 03:27 AM   #5
AA Team Emeritus
 
Join Date: Oct 2002
Location: Chatsworth, GA
Posts: 4,071
Send a message via Yahoo to loganj
lights

Although I think most corals can be grown under PC/VHO lighting, I have to disagree with the statement that MH doesn't penetrate the water as well as other types of lighting. Bear in mind that I have done no scientific testing on this... The MH light is concentrated in a smaller area thus it seems that it would have a higher penetration than other types of lighting. JMHO.
Logan J
__________________
loganj is offline   Reply With Quote
Old 01-07-2003, 10:22 PM   #6
Aquarium Advice FINatic
 
Join Date: May 2002
Location: Western NY
Posts: 610
Send a message via ICQ to Bang Guy
logan is right. The closer to a point source of light, the deeper the light can penetrate water. So... HID lighting penetrates further followed by PC and then VHO. The less of a point source the more area can be covered and the more even the coverage. With electronic ballasts, they all produce about the same amount of light per watt of input power.
__________________

__________________
If you wake up breathing CONGRATULATIONS!!! You get another chance to do it right.
Bang Guy is offline   Reply With Quote
Reply

Tags
light, lighting

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
I guess the question should be Fishyfanatic Freshwater & Brackish - Planted Tanks 13 01-08-2007 04:34 PM
Hey, fishfreek....question for ya. crazyred Forum Admin & Announcements 3 05-23-2006 03:06 PM
hey all guess what happened! xahx Saltwater & Reef - Sick Fish or Coral 2 04-16-2005 10:16 AM
Hey there everyone! question re: filters MoxieGrrrl General Hardware/Equipment Discussion 6 03-05-2005 10:01 PM
hey hey hey wheres the love? DaPony87 Freshwater & Brackish - General Discussion 12 03-10-2004 10:04 PM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 11:03 AM.


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