photoperiod/light intensity
Planted Tank Forums
Your Tanks Image Hosting *Tank Tracker * Plant Profiles Fish Profiles Planted Tank Guide Photo Gallery Articles

Go Back   The Planted Tank Forum > Specific Aspects of a Planted Tank > Lighting


Reply
 
Thread Tools Display Modes
Old 04-08-2004, 10:09 PM   #1
newkidvoodoo
Algae Grower
 
newkidvoodoo's Avatar
 
PTrader: (0/0%)
Join Date: Oct 2003
Location: Cincinnati, OH
Posts: 75
Send a message via AIM to newkidvoodoo Send a message via MSN to newkidvoodoo Send a message via Yahoo to newkidvoodoo
Default

ok, i did a search and couldn't really find the exact thing i was looking for, so i'll ask here. i am looking into getting one of the Coralife Aqualight 36" 2x96w lights for my 38 gal tank. the only thing is, is this is just over 5 watts/gallon. my plants aren't exactly high light plants. i was wondering if i could operate one of the lights for most of the photoperiod, and then both of them for just the peak hours. i actually think this would be good for the plants and fish, but i am unsure if it works this way. i have read some conflicting opinions on photoperiod/light intensity. i just don't want to burn my plants and blind my fish.

i have also considered metal halides (i hear the sparkling is beautiful), but i haven't been able to find a satisfactory sit-on-tank, all-in-one, metal halide system that would be feasible for my tank. if i could, i would buy it, anyone know of one?
__________________
http://homepage.mac.com/enemyofthesun/

34 gal, Proquatics 1600 (160gph), Proquatics heater (200w), 4x30w flourescent bulbs (3.16wpg), nutrafin co2 system, 5 in Flourite/Onyx substrate mix (50/50), Flora: java fern, java moss, various cryptocoryne... Fauna: 3 Boesemani rainbows, 1 oto, 1 pleco, 5 Amano shrimp, and lots & lots of malaysian trumpet snails.
newkidvoodoo is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 04-09-2004, 12:14 AM   #2
Urkevitz
Wannabe Guru
 
PTrader: (8/100%)
Join Date: Jan 2004
Location: NY
Posts: 1,891
Default

What plants do you have, if they aren't high light then you can probably run just one of the bulbs for the entire photoperiod.
Urkevitz is offline   Reply With Quote Quick reply to this message
Old 04-09-2004, 12:23 AM   #3
Rolo
Wannabe Guru
 
PTrader: (7/100%)
Join Date: Dec 2003
Location: Twin Cities, Minnesota
Posts: 1,717
Default

I agree with urkevitz. With only one bulb running, that's about 2.5 wpg - well sufficient. I think 5wpg is pushing it even though you want to try to do it for only a short duration.

Secondly, it won't be natural. Near the equator and tropical regions, the sun is direct and intensity consistent thorough out the whole day. There are no few hours low-light at dusk and dawn like here in the upper latitudes (or lower), but rather sunrise and sunset last about 10 minutes.
__________________
Rolo is offline   Reply With Quote Quick reply to this message
Old 04-09-2004, 02:07 AM   #4
2la
Planted Tank Enthusiast
 
2la's Avatar
 
PTrader: (0/0%)
Join Date: Aug 2002
Location: Portland, OR
Posts: 993
Default

Quote:
Originally Posted by Rolo737
Secondly, it won't be natural. Near the equator and tropical regions, the sun is direct and intensity consistent thorough out the whole day. There are no few hours low-light at dusk and dawn like here in the upper latitudes (or lower), but rather sunrise and sunset last about 10 minutes.
Okay, explain this one a little more. Why wouldn't tropical areas have a dawn and dusk? I can't imagine that the refraction of light as the sun nears horizon could have so dramatic of an effect that there'd only be a period of 10 minutes of fading light (i.e., sunlight begins to attenuate quite some time before sunset!). I went to the Big Island of Hawa'ii for my senior trip and I certainly don't recall any sudden 'lights out' or 'lights on' phenomena occurring. In fact, dawn and dusk were absolutely beautiful and ramped up just as it does (if perhaps slightly accelerated) here in Oregon!

2la
2la is offline   Reply With Quote Quick reply to this message
Old 04-09-2004, 02:28 AM   #5
Rolo
Wannabe Guru
 
PTrader: (7/100%)
Join Date: Dec 2003
Location: Twin Cities, Minnesota
Posts: 1,717
Default

I'm not an expert on this, but I read an article written by someone who was. The jist of it was like this: The sun travels faster at the equatorial regions of the world, but also much more direct and intense, since the light cuts straight down into the Earth, rather than at an angle in the upper and lower latitudes. I wasn't implying that there was a sudden lights on and out. I see where it wasn't clear though. The article basically said that dusk and dawn happens quicker than here, or in an other way that the strong direct sunlight last for a longer duration of the day up to dusk and begins quicker after dawn.
__________________
Rolo is offline   Reply With Quote Quick reply to this message
Old 04-09-2004, 03:54 AM   #6
2la
Planted Tank Enthusiast
 
2la's Avatar
 
PTrader: (0/0%)
Join Date: Aug 2002
Location: Portland, OR
Posts: 993
Default

Well, that I would agree with, but I wouldn't say it's so dramatic an effect as it's sounding. Yes, the angle of the sun is less oblique than in temperate zones, but at some point all light from the sun hitting anywhere on Earth must go from -180 degrees (sunrise) to +180 degrees (sunset). In fact, if anything, it's no so much that dawn and dusk would be less pronounced than in temperate zones, but that noonday sun would be more dramatic in tropical zones.
2la is offline   Reply With Quote Quick reply to this message
Old 04-09-2004, 10:40 AM   #7
George Willms
Wannabe Guru
 
George Willms's Avatar
 
PTrader: (10/100%)
Join Date: Jul 2003
Location: Rutherford, NJ
Posts: 1,433
Default

When I went to Costa Rica it was a pretty dramatic affair. It would literally go from broad daylight to darkness in about 15 minutes.
__________________
George
#2
Ehfipimp extraordinaire!
Eheim Pimp Club Recruiter, Saergant at Arms, and Enforcer.

29 and 45 gallon. 2026, 2028
My 29 gallon tank
George Willms is offline   Reply With Quote Quick reply to this message
Old 04-09-2004, 12:39 PM   #8
newkidvoodoo
Algae Grower
 
newkidvoodoo's Avatar
 
PTrader: (0/0%)
Join Date: Oct 2003
Location: Cincinnati, OH
Posts: 75
Send a message via AIM to newkidvoodoo Send a message via MSN to newkidvoodoo Send a message via Yahoo to newkidvoodoo
Default

well, thanks for the input. i'm going to go ahead and get the 2x96w fixture, and if it turns out to be too much light, then i'll just run one of the lights. or maybe i'll just have to go get a bigger tank... that would be a real tragedy wouldn't it?
__________________
http://homepage.mac.com/enemyofthesun/

34 gal, Proquatics 1600 (160gph), Proquatics heater (200w), 4x30w flourescent bulbs (3.16wpg), nutrafin co2 system, 5 in Flourite/Onyx substrate mix (50/50), Flora: java fern, java moss, various cryptocoryne... Fauna: 3 Boesemani rainbows, 1 oto, 1 pleco, 5 Amano shrimp, and lots & lots of malaysian trumpet snails.
newkidvoodoo is offline   Reply With Quote Quick reply to this message
Old 04-09-2004, 01:39 PM   #9
malkore
Planted Tank Guru
 
malkore's Avatar
 
PTrader: (0/0%)
Join Date: Nov 2003
Location: Lincoln, NE
Posts: 2,165
Default

I'm not sure that light has separate plugs/switches for each bulb. I'm pretty sure the 4x55 coralife does..no clue on the 2x96. I'd investigate that first.
__________________
Malkore
Filstar XP2 PIMP #3
Visit my aquarium pages - see specs on my tanks, and photos of how they've evolved
malkore is offline   Reply With Quote Quick reply to this message
Old 04-09-2004, 02:09 PM   #10
newkidvoodoo
Algae Grower
 
newkidvoodoo's Avatar
 
PTrader: (0/0%)
Join Date: Oct 2003
Location: Cincinnati, OH
Posts: 75
Send a message via AIM to newkidvoodoo Send a message via MSN to newkidvoodoo Send a message via Yahoo to newkidvoodoo
Default

the coralife aqualight dual strip lights all come with seperate powerstrips and cords for each of the lamps.
__________________
http://homepage.mac.com/enemyofthesun/

34 gal, Proquatics 1600 (160gph), Proquatics heater (200w), 4x30w flourescent bulbs (3.16wpg), nutrafin co2 system, 5 in Flourite/Onyx substrate mix (50/50), Flora: java fern, java moss, various cryptocoryne... Fauna: 3 Boesemani rainbows, 1 oto, 1 pleco, 5 Amano shrimp, and lots & lots of malaysian trumpet snails.
newkidvoodoo is offline   Reply With Quote Quick reply to this message
Old 04-09-2004, 05:01 PM   #11
Aquaman
Planted Member
 
Aquaman's Avatar
 
PTrader: (0/0%)
Join Date: Dec 2003
Location: No. VA.
Posts: 247
Default

I just added another 4x55 watt jebo light to my 90 gal. with both high and low light plants for a total of 440 watts thats 4.8 wpg, directly on the glas canopy. I have them on for a total of 14 hours. man everything in there is pearling, even the anubias. I had originally intended to have one set of 2 on this additional light on, but decided to try it for a few days and see what happens so far everything is ok. Let there be MORE light!
Aquaman is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Light Intensity NewKidontheBlock Lighting 3 07-02-2004 06:30 PM
Light intensity? shwin Lighting 4 04-23-2004 03:25 PM
The Potential Importance of Tank Depth on Light Attenuation Splash Lighting 25 03-26-2004 07:41 PM
PC's - Intial intensity Doomer Lighting 7 07-19-2003 12:26 AM


All times are GMT. The time now is 01:19 PM.


Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright Planted Tank LLC 2012