Is my lighting OK? - The Planted Tank Forum
LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 11-15-2012, 08:43 PM Thread Starter
Algae Grower
Join Date: Nov 2012
Location: USA
Posts: 68
Is my lighting OK?

Set up my first tank and decided from the start to go with real plants. I want to get some opinion on whether the setup is ok.

I have a 20G high acrylic tank. It came with a single 15" 14W T8 6700K light. I've added a fixture that holds 2 24" 14W T5 6700K lights. They are on top of the tank (molded acrylic top underneath the dual light - nothing between water and light for shorter fixture). Using excel for carbon. heavily planted.
*EDIT - I'd say the lights are about 14-15" from the substrate

A few questions:

1. Is the lighting enough?
2. Is it positioned correctly?
3. Will the acrylic top mess with the light under the dual fixture (absorb some of the light, etc)?
OldGrumpy is offline  
Sponsored Links
post #2 of 4 (permalink) Old 11-17-2012, 04:07 PM Thread Starter
Algae Grower
Join Date: Nov 2012
Location: USA
Posts: 68
Wow. 78 views and no comment? Am I missing info? Stupid questions?
OldGrumpy is offline  
post #3 of 4 (permalink) Old 11-17-2012, 04:25 PM
Algae Grower
Join Date: Nov 2012
Location: Toronto, Canada
Posts: 56
I don't quite have the answer for you, however, are the light T5NO or T5HO? There's a huge difference between the two, especially since your tank is pretty deep. If they ARE T5HO, then make sure to get pressurized CO2, or at least DIY CO2, or you'll be seeing an algae problem pretty soon. If you have mounting legs, you could use those and just not use the acrylic top as it may be a bit more aesthetically pleasing for you, I know it is for me personally. However, as long as you keep the acrylic top clean, I don't see a problem with the acrylic top in terms of light potency.


Harshal1992 is offline  
post #4 of 4 (permalink) Old 11-17-2012, 05:22 PM
Algae Grower
el Caspar's Avatar
Join Date: Oct 2012
Location: Ottawa, Canada
Posts: 45
As harshal1992 mentioned, the T5 bulbs being hi output or normal output makes a difference but for a 20 G heavy planted tank, 3x 14w bulbs puts you at just over 2watts per gallon, giving you good light for plants requiring medium low light. CO2 is very important also as it is one of the 3 key ingredients to your plants growth through photosynthesis. Pressurized is better and easier to regulate, but I have a nice DIY system that works great. Most important is the balance between fertilizer, light, and co2 you give your plants. You can't alter one beneficially without consideration to the others. Hope that helps, cheers

Steward of the Tank
el Caspar is offline  

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


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
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

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
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome