light penatration through water?

billford · 09/09/2008, 09:17 PM

when i look for corals to buy,the sellers often list how deep the coral was collected from i.e 15ft. my question is approx. how many lumens would be available to the coral at this depth.it will help with giving proper lighting.is there a lighting chart that describes the loss of light per foot of water with different lights?

ihavtats29 · 09/09/2008, 09:33 PM

i dont know of any chart but light penatration is measured by PAR
there is a meter you can buy to measure the lighting in your tank, maybe your local reef club or a mamber might have one you can borrow

seapug · 09/09/2008, 09:59 PM

There are books that outline light attenuation at depth in nature, but it's more complicated in an aquarium. It's easier to go by general light requirements for the species you are interested in and the lighting you have on your tank.

BurntOutReefer · 09/10/2008, 09:47 AM

Hope this helps:

http://oceansjsu.com/105d/exped_briny/13.html

billford · 09/10/2008, 01:43 PM

thanks burntoutreefer,it was what iwas looking for. i was wondering if someone with a par meter would make some kind of chart on different lights and how much available light there is at different depths from diferent watt lights.just as a rough guide maybe .it may be a very helpful reference for RC.

BurntOutReefer · 09/10/2008, 03:39 PM

check out sanjay's threads...do a search...he seems to be the light king here........

09/09/2008, 09:17 PM	#1
billford Registered Member Join Date: Jan 2008 Location: chicago Posts: 446	light penatration through water? when i look for corals to buy,the sellers often list how deep the coral was collected from i.e 15ft. my question is approx. how many lumens would be available to the coral at this depth.it will help with giving proper lighting.is there a lighting chart that describes the loss of light per foot of water with different lights?

09/09/2008, 09:33 PM	#2
ihavtats29 Registered Member Join Date: Mar 2004 Location: cordova , TN Posts: 2,882	i dont know of any chart but light penatration is measured by PAR there is a meter you can buy to measure the lighting in your tank, maybe your local reef club or a mamber might have one you can borrow __________________ got reef? Current Tank Info: 29 biocube HQI

09/09/2008, 09:59 PM	#3
seapug Registered Member Join Date: Dec 2006 Location: 4980 ft. Posts: 7,954 Blog Entries: 1	There are books that outline light attenuation at depth in nature, but it's more complicated in an aquarium. It's easier to go by general light requirements for the species you are interested in and the lighting you have on your tank. __________________ insert clever saying here. Current Tank Info: 200 gallon custom Marineland DD peninsular tank. LPS dominated mixed reef. Previous 90 gallon mixed reef TOTM April 2009.

09/10/2008, 09:47 AM	#4
BurntOutReefer Registered Member Join Date: Nov 2005 Location: Granada Hills Posts: 4,376	Hope this helps: http://oceansjsu.com/105d/exped_briny/13.html

09/10/2008, 01:43 PM	#5
billford Registered Member Join Date: Jan 2008 Location: chicago Posts: 446	thanks burntoutreefer,it was what iwas looking for. i was wondering if someone with a par meter would make some kind of chart on different lights and how much available light there is at different depths from diferent watt lights.just as a rough guide maybe .it may be a very helpful reference for RC.

09/10/2008, 03:39 PM	#6
BurntOutReefer Registered Member Join Date: Nov 2005 Location: Granada Hills Posts: 4,376	check out sanjay's threads...do a search...he seems to be the light king here........