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 11-11-2008, 01:54 PM   #1
Aquarium Advice Freak
 
Fierro Nights's Avatar
 
Join Date: Aug 2008
Location: Texas
Posts: 211
watt Per hight

alright, here's the situation, ive been searching the net trying to get the correct lighting for my 20 gallon tall for sps coral.

all i have come accross is wattage per gallon which does not mean squat, it think its a very stupid way of measuring light. the appropriate amount of light, i can have a tank thats a 5 inch square but but high enough to hold 20 gallons of water, if the light doesnt reach the bottom then the light is no good, i know this is an extreme exaduration but geeze, all i want to know is how far does light wattage per lumin penetrate water for pc lighting and what lumenus is required to penitrate roughly 8 inches of water for sps coral?

is there a chart that i missed somewhere? the perfict chart would be a chart that had differnt lights, MH, PC, VHO, HO and LED, showing the lumins per watt, Kelvin rating differences and HOW DEEP kelvin, and lumins penetrate water !!!!!!!

there must be a professor out there who has spent time making this chart, please tell me that this chart is out there somewhere.

you see, i tried to compare my tank to larger tanks, you have 55 gallon long tanks, then you have small tall tanks, now WPG seems to only refer to if you place corals all along the base of the tank and not just right smack in the center, i understand that larger tanks have light which utilize longer bulbs ( VHO, HO ) and that MH only cover a particular area, i just want to know how many watts are needed to penetrate X amount of depth with PC lighting using acatinics only.

i currently have a 65 watt 50/50 pc over a 20gallon tall, im interested in adding just an acatinic pc.
__________________

__________________
Fierro Nights is offline   Reply With Quote
Old 11-11-2008, 03:25 PM   #2
Aquarium Advice Addict
 
Join Date: Aug 2006
Location: not here anymore
Posts: 5,338
In a nutshell, if you're serious about SPS then you should probably focus on VHO or MH. I feel your pain, but I doubt there is such a chart that is really useful because there are just too many variables. I would hazard to guess that even the brand of the bulb will make a difference.

Quote:
i just want to know how many watts are needed to penetrate X amount of depth with PC lighting using acatinics only.
The problem is, as far as I understand it, regardless of how many watts you have above the tank, a PC light will only penetrate so deep. If you could put a billion Watts of PC lighting above your tank, it wouldn't penetrate any farther than 100W. That's why you need to think about a different type of bulb.

Regarding using actinics only... not sure if you're going to like the look of that, and not sure the corals will really like that. It's going to be really blue and will make the fluorescent greens and reds of the corals really pop, but the corals really need the "daylight" color of light (10K, 20K) for health.

On the flip side though, you can grow *some* SPS coral under PC. The turbinarias, stylophoras, and a few other of the lower light SPS corals will survive if put very high in a tank under PCs. Don't expect them to grow like weeds, but they will survive just fine.
__________________

__________________
Kurt_Nelson is offline   Reply With Quote
Old 11-11-2008, 03:36 PM   #3
SW REEF 18+ YEARS
Community Admin
 
melosu58's Avatar



Tank of the Month Award
 
Join Date: Oct 2004
Location: Virginia
Posts: 38,242
I just dont think PC`s have the intensity that VHO`s, T5`s or MH`s have. When it comes to your higher light corals light intensity is needed.
__________________

SITE ADMINISTRATOR

You can view many of my fish and corals in my photo albums in my profile.

View my tank


AA Community Rules|AA TOS

Forums 101 - posting, accounts, basics
melosu58 is offline   Reply With Quote
Old 11-11-2008, 03:50 PM   #4
Aquarium Advice Freak
 
Fierro Nights's Avatar
 
Join Date: Aug 2008
Location: Texas
Posts: 211
i thought pc's provided more luminous then VHO.

i read an article about it on a site that is frequently used as a reference on this site, ill find it again and post, im not attempting to correct anyone here, im just broadening resources as to come to a conclusion to reduce unnecessary costs when purchasing a light.
__________________
Fierro Nights is offline   Reply With Quote
Old 11-11-2008, 04:01 PM   #5
AA Team Emeritus
 
Ziggy953's Avatar



POTM Champion
Tank of the Month Award
 
Join Date: Feb 2006
Location: Owings Mills, Maryland
Posts: 9,101
I can tell you from experience having used MH, VHO, PC and T5HO for coral growth that PCs just do not cut it for SPS corals.

I found that my SPS corals lost their color and pretty much browned out when under PC lighting.

I currently have a mixture of MH VHO and T5HO on my reef. PC lights do not have the intensity that MH, T5 and VHO have. If you want a simple solution to your problem and like the "tube" type light go with T5HO you will do just fine with them and SPS corals.
Ziggy953 is offline   Reply With Quote
Reply

Tags
watt

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
2 65 watt ballasts FS Sadielynn Archive 0 10-20-2007 08:08 AM
adding 2 t5 9 watt strips to my existing t8 15 watt Freshwater & Brackish - Planted Tanks 6 08-04-2006 08:26 AM
Light hight over tank question. CompMage Freshwater & Brackish - General Discussion 3 11-05-2005 07:11 AM
65 Watt ?? Tito2491 Saltwater Reef Aquaria 2 02-20-2005 06:51 PM
How long can fish handle hight Nitrite levels? jamal-188 Saltwater & Reef - Getting Started 5 10-15-2003 08:44 PM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 06:01 AM.


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