Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Old 24-09-2003, 02:45 AM
Dan Norgard
 
Posts: n/a
Default Determing light requirements...

It would seem to me that the depth of the tank would be the determining
factor in lumens, not the gallons. ie: a 24 inch deep tank would require
more light than an 18 inch deep tank even though both were 40 gallons.
Anyone agree or am I all wet? Excuse the drawing...
OO
/ | \
|~~/~~|~~\~~~~ |
| / | \ |
|_/________\___|

Dan




  #2   Report Post  
Old 24-09-2003, 04:27 AM
Dinky
 
Posts: n/a
Default Determing light requirements...

Xref: 127.0.0.1 rec.aquaria.freshwater.plants:75954


"Dan Norgard" wrote in message
...
It would seem to me that the depth of the tank would be the determining
factor in lumens, not the gallons. ie: a 24 inch deep tank would require
more light than an 18 inch deep tank even though both were 40 gallons.
Anyone agree or am I all wet? Excuse the drawing...



As usual, YMMV. Just like the "one inch of fish per gallon" rule, it's just
a helpful guidline. And yes, you're correct. A very deep tank may require
more light than a shallower same-volumed tank.


  #3   Report Post  
Old 24-09-2003, 10:12 PM
NetMax
 
Posts: n/a
Default Determing light requirements...


"Dan Norgard" wrote in message
...
It would seem to me that the depth of the tank would be the determining
factor in lumens, not the gallons. ie: a 24 inch deep tank would

require
more light than an 18 inch deep tank even though both were 40 gallons.
Anyone agree or am I all wet? Excuse the drawing...
OO
/ | \
|~~/~~|~~\~~~~ |
| / | \ |
|_/________\___|

Dan



In http://faq.thekrib.com/plant-lighting.html , see:

When calculating the amount of lighting you will need there is a general
of thumb. First multiply the surface area of the aquarium by the distance
from the light source to the top of the gravel. Then depending on the
type of plants you desire multiply this by one of the factors given
below.

etc etc

NetMax


  #4   Report Post  
Old 25-09-2003, 08:03 AM
Djay
 
Posts: n/a
Default Determing light requirements...

Your are basically correct. Are you growing surface plants or are you
asking if the available light at the surface of the gravel will be the same?
The lumens will be less at the surface of the gravel on a deeper tank.

DJay


"Dan Norgard" wrote in message
...
It would seem to me that the depth of the tank would be the determining
factor in lumens, not the gallons. ie: a 24 inch deep tank would require
more light than an 18 inch deep tank even though both were 40 gallons.
Anyone agree or am I all wet? Excuse the drawing...
OO
/ | \
|~~/~~|~~\~~~~ |
| / | \ |
|_/________\___|

Dan





  #5   Report Post  
Old 25-09-2003, 11:32 AM
Paul Murray
 
Posts: n/a
Default Determing light requirements...

In article , NetMax wrote:
In http://faq.thekrib.com/plant-lighting.html , see:

When calculating the amount of lighting you will need there is a general
of thumb. First multiply the surface area of the aquarium by the distance
from the light source to the top of the gravel. Then depending on the
type of plants you desire multiply this by one of the factors given
below.


Unfortunately, the faq doesn't say what unit of measure distance is meant
to be in, which makes it a bit useless.

-Paul


  #6   Report Post  
Old 25-09-2003, 02:12 PM
Sandy
 
Posts: n/a
Default Determing light requirements...

Paul Murray wrote:
In article , NetMax
wrote:
In http://faq.thekrib.com/plant-lighting.html , see:

When calculating the amount of lighting you will need there is a
general of thumb. First multiply the surface area of the aquarium by
the distance from the light source to the top of the gravel. Then
depending on the type of plants you desire multiply this by one of
the factors given below.


Unfortunately, the faq doesn't say what unit of measure distance is
meant to be in, which makes it a bit useless.

-Paul


Inches.

--
Don`t Worry, Be Happy

Sandy
--

E-Mail:-
Website:-
http://www.ftscotland.co.uk
IRC:- Sandyb in #rabble uk3.arcnet.vapor.com Port:6667
#Rabble Channel Website:- http://www.ftscotland.co.uk/rabbled
ICQ : 41266150




Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Determing bushy tomatoes Mark United Kingdom 2 05-06-2004 02:08 AM
Light Requirements sneff Orchids 3 11-10-2003 05:22 PM
Determing light requirements... Dan Norgard Freshwater Aquaria Plants 0 24-09-2003 02:35 AM
Determing light requirements... Dan Norgard Freshwater Aquaria Plants 0 24-09-2003 02:30 AM
light requirements for a 20X JEB Freshwater Aquaria Plants 11 30-04-2003 09:44 PM


All times are GMT +1. The time now is 11:39 PM.

Powered by vBulletin® Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright 2004-2019 GardenBanter.co.uk.
The comments are property of their posters.
 

About Us

"It's about Gardening"

 

Copyright © 2017