Desk lamp?
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 > General Planted Tank Forums > Low Tech Forum


Reply
 
Thread Tools Display Modes
Old 02-17-2012, 12:18 AM   #1
aquariumnewb
Algae Grower
 
PTrader: (0/0%)
Join Date: Feb 2012
Location: USA
Posts: 16
Default Desk lamp?

Hi everybody, I recently purchased a MarineLand 5g tank (which comes with LED lights, which research told me has 16 x .1 watt bulbs). Although I use aquarium gravel substrate, I prefer the look of a heavy-planted tank, so I know I need a high-light aquarium.

I began to shine my desk lamp, which has a 30W bulb (a spiral shaped, screw-in bulb). The light is a strong white color (which, based off my reading online, seems to be a higher temperature color, >8000). So my question is, do you think this bulb provides sufficient light at the spectrum for high-light plants?
aquariumnewb is offline   Reply With Quote Quick reply to this message
Old 02-17-2012, 02:42 AM   #2
Hoppy
Planted Tank Guru
 
Hoppy's Avatar
 
PTrader: (75/100%)
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 18,974
Default

You can't do a "low tech" tank with high light. High light requires CO2, good fertilizing, very good water circulation in the tank, good surface rippling, etc. A 30 watt CFL bulb is going to be high light on that small tank.
__________________
Hoppy
Hoppy is offline   Reply With Quote Quick reply to this message
Old 02-17-2012, 02:50 AM   #3
aquariumnewb
Algae Grower
 
PTrader: (0/0%)
Join Date: Feb 2012
Location: USA
Posts: 16
Default

Is Excel sufficient for CO2 dosing?
aquariumnewb is offline   Reply With Quote Quick reply to this message
Old 02-17-2012, 04:31 AM   #4
Hoppy
Planted Tank Guru
 
Hoppy's Avatar
 
PTrader: (75/100%)
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 18,974
Default

Excel isn't sufficient with high light, only with low to low medium light.
__________________
Hoppy
Hoppy is offline   Reply With Quote Quick reply to this message
Old 02-17-2012, 05:41 AM   #5
epiphany
Planted Member
 
PTrader: (0/0%)
Join Date: Oct 2011
Location: Canada
Posts: 238
Default

Replace that 30w bulb with a 10-13 watt bulb and you'd be a lot better off.
epiphany is offline   Reply With Quote Quick reply to this message
Old 02-17-2012, 07:02 AM   #6
VivaDaWolf
Planted Tank Enthusiast
 
VivaDaWolf's Avatar
 
PTrader: (13/100%)
Join Date: Feb 2012
Location: Brooklyn, NY
Posts: 844
Default

Aside from algae, why is it that bad to have so much light like that?
VivaDaWolf is offline   Reply With Quote Quick reply to this message
Old 02-17-2012, 04:32 PM   #7
Hoppy
Planted Tank Guru
 
Hoppy's Avatar
 
PTrader: (75/100%)
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 18,974
Default

Quote:
Originally Posted by VivaDaWolf View Post
Aside from algae, why is it that bad to have so much light like that?
Plant growth rates are driven by light intensity. The more light, the faster the plants grow. But, they can only grow that fast if they have the needed nutrients to build plant tissue, and carbon is the primary building material. Carbon is supplied in adequate amounts for a high light tank only by CO2. But, the more light you have, the higher the concentration of CO2 in the water you need. If there are no fish or shrimp in the tank getting a high enough CO2 concentration isn't a big deal when you have a pressurized CO2 system. Unfortunately, fish and shrimp can only tolerate a limited amount of CO2 in the water, so with high light you are walking a tightrope between having enough CO2 for the plants, but not too much for the fish.

If the plants don't have enough nutrients to grow as fast as the light is driving them to, they will not be healthy plants. And, the less competitive plants may just give up and die. Unhealthy plants and dying plants are prime real estate for algae colonies to grow on. So, bad algae problems are a primary reason why "too much" light is too much.

Another reason is the increased maintenance required to keep a high light tank healthy. First, the rapid plant growth can quickly create a dense mass of plant matter, which stops water circulation in the tank. But, it is water circulation that brings the nutrients, especially CO2, to the plants. Without good circulation many plants will starve. High light means lots of pruning required - when I had high light I had to prune twice a week.

High light also means keeping the tank, the water and the filter as clean as you can, also to avoid encouraging algae to begin growing. And, it means constantly tinkering with the CO2 system to keep a good level of CO2 in the water even with the constantly changing conditions in the tank. It makes a hobby become a job, something some of us soon tire of. It isn't just plants that grow very fast with high light - algae also grow very fast. You have a much shorter "window of time" to correct conditions that lead to algae starting if you have high light, where with lower light you can wait awhile before having to correct those conditions.

The good news is that "high light demanding plants" really demand good CO2 much more than they demand high light. If you limit the light intensity to 40-50 micromols of PAR, and supply CO2 as if you had high light, you can grow virtually all plants, including HC very well, just slower. And, you don't find yourself tied to a planted tank job instead of a planted tank hobby.
__________________
Hoppy
Hoppy is offline   Reply With Quote Quick reply to this message
Old 01-06-2013, 12:20 AM   #8
Mahlady
Algae Grower
 
Mahlady's Avatar
 
PTrader: (0/0%)
Join Date: Dec 2012
Location: Northern IL.
Posts: 84
Thumbs up

Quote:
Originally Posted by Hoppy View Post
Plant growth rates are driven by light intensity. The more light, the faster the plants grow. But, they can only grow that fast if they have the needed nutrients to build plant tissue, and carbon is the primary building material. Carbon is supplied in adequate amounts for a high light tank only by CO2. But, the more light you have, the higher the concentration of CO2 in the water you need. If there are no fish or shrimp in the tank getting a high enough CO2 concentration isn't a big deal when you have a pressurized CO2 system. Unfortunately, fish and shrimp can only tolerate a limited amount of CO2 in the water, so with high light you are walking a tightrope between having enough CO2 for the plants, but not too much for the fish.

If the plants don't have enough nutrients to grow as fast as the light is driving them to, they will not be healthy plants. And, the less competitive plants may just give up and die. Unhealthy plants and dying plants are prime real estate for algae colonies to grow on. So, bad algae problems are a primary reason why "too much" light is too much.

Another reason is the increased maintenance required to keep a high light tank healthy. First, the rapid plant growth can quickly create a dense mass of plant matter, which stops water circulation in the tank. But, it is water circulation that brings the nutrients, especially CO2, to the plants. Without good circulation many plants will starve. High light means lots of pruning required - when I had high light I had to prune twice a week.

High light also means keeping the tank, the water and the filter as clean as you can, also to avoid encouraging algae to begin growing. And, it means constantly tinkering with the CO2 system to keep a good level of CO2 in the water even with the constantly changing conditions in the tank. It makes a hobby become a job, something some of us soon tire of. It isn't just plants that grow very fast with high light - algae also grow very fast. You have a much shorter "window of time" to correct conditions that lead to algae starting if you have high light, where with lower light you can wait awhile before having to correct those conditions.

The good news is that "high light demanding plants" really demand good CO2 much more than they demand high light. If you limit the light intensity to 40-50 micromols of PAR, and supply CO2 as if you had high light, you can grow virtually all plants, including HC very well, just slower. And, you don't find yourself tied to a planted tank job instead of a planted tank hobby.
By far one of the best reads out of about 500 i've read over the past month.
Very nice explanation.
Mahlady
__________________
Taking life one day at a time
Mahlady is offline   Reply With Quote Quick reply to this message
Old 02-17-2012, 07:23 AM   #9
aquariumnewb
Algae Grower
 
PTrader: (0/0%)
Join Date: Feb 2012
Location: USA
Posts: 16
Default

My goal is to grow an HC carpet, which to my understanding, requires high light. So your thought is that excel doesn't give sufficient carbon for this? Thanks!!
aquariumnewb is offline   Reply With Quote Quick reply to this message
Old 02-17-2012, 01:47 PM   #10
EnigmaticGuppy92
Planted Tank Enthusiast
 
EnigmaticGuppy92's Avatar
 
PTrader: (0/0%)
Join Date: Jan 2012
Location: England
Posts: 532
Default

i would set up a diy co2 system with the high light
__________________
40 gallon dirt tank
5 Gallon planted bonsai dirt tank
1 Bearded Dragon ''Spyro''
Normal Leopard Gecko ''Shadow''
Super hypo tangerine baldy carrot tail leopard gecko ''Moon''
2 whites tree frogs ''Ying and Yang''
1 Royal Python ''Neptune''
1 Veiled Chameleon '' Yoshi''
EnigmaticGuppy92 is offline   Reply With Quote Quick reply to this message
Old 02-19-2012, 04:04 AM   #11
radioman
Wannabe Guru
 
radioman's Avatar
 
PTrader: (14/100%)
Join Date: Oct 2007
Location: College Station, TX
Posts: 1,348
Default

Perfect explanation Hoppy.
__________________
-Mike
Mini-M Journal: http://www.plantedtank.net/forums/sh...d.php?t=168906
Canon Pimp Club #012
radioman is offline   Reply With Quote Quick reply to this message
Old 01-06-2013, 12:59 AM   #12
caoder
Algae Grower
 
PTrader: (0/0%)
Join Date: Nov 2011
Location: Canada
Posts: 116
Default

fyi im growing hc that was a rescue from my lfs with only a few leaves without a problem in my 10g with a 13w in a desk lamp
caoder is online now   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:
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


All times are GMT. The time now is 05:53 PM.


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