Need light help I'm clueless. - The Planted Tank Forum
LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 06-08-2012, 05:58 AM Thread Starter
Join Date: Jun 2012
Location: Lodi,Ca
Posts: 1
Need light help I'm clueless.

Ok well here's the deal my fiancι has a 90 gallon standard tank That she has live plants and driftwood in. No special substrate or co2. She does feed liquid fertilizer and plant food. We want to replace the light. I do reef tanks and have an extra light that we planned on using. It has 4 X 54w T5 HO and 2 X 250 W HQI MH bulbs. My question is since this won't be used for a reef what bulbs should I use? I order all my reef supplies from bulk reef supplies, is their a better place for planted tank supplies?
Nm767 is offline  
Sponsored Links
post #2 of 3 (permalink) Old 06-08-2012, 06:10 AM
Pelvicachromis Lover!
Complexity's Avatar
Join Date: Jan 2008
Location: Houston, TX
Posts: 5,080
I'd suggest using only the 4 x 54w fixture. Put in two 6500K bulbs and two 10000K bulbs, but only run TWO bulbs at a time (not all four). If your fiancι ever wants to get injected CO2, then she can run all four bulbs a few hours in the middle of the day (called a noon burst) while running only two bulbs the rest of the time.

To use the bulbs evenly, you can put each bank of bulbs on separate timers and rotate which set of bulbs are burning.

For example (notice no overlap, bulbs run same number of hours each day)
Bank 1 (inside bank of bulbs) -- from 10am to 2pm
Bank 2 (outside bank of bulbs) -- from 2pm to 6pm

With a 2 hour noon burst, here's how it would go (notice all four bulbs running from 1pm to 3pm)
Bank 1 (inside bank of bulbs) -- from 10am to 3pm
Bank 2 (outside bank of bulbs) -- from 1pm to 6 pm

There are many other options from which you can choose; however, since I have a 75g and a 90g with a 4 x 54w T5HO fixture, I am very familiar with this setup. I only run all four bulbs when I'm running injected CO2; otherwise, I'm just begging for algae problems.

You can probably run the bulbs longer than 8 hours a day, but that's a good number to start with. After the tank's been running like that for the first few months, if all is going well (no algae problems), you can start increasing the photoperiod slowly (maybe add 30 minutes every week or two) until you get what you want. I have a very long photoperiod of 12 hours, but most people prefer less.

Vicki —Rena Filstar pimp #142 (four XP4s/three XP2s/one XP1) • Eheim pimp #301 (Pro II 2128) • Victor pimp #27 (VTS-253B-320)

• 90g - Journal Pelvicachromis taeniatus 'Moliwe' —— • 75g - Journal Pelvicachromis pulcher 'Lagos Red' Better Pics 8-24
• 29g - Journal Pelvicachromis pulcher 'unknown' —-- • 29g - Pelvicachromis taeniatus 'Moliwe'
• 5g - RCS colony —————————————————— • 2.5g - Journal Retired
Complexity is offline  
post #3 of 3 (permalink) Old 06-08-2012, 11:24 AM
Wannabe Guru
Join Date: Feb 2011
Location: Baltimore Maryland
Posts: 1,701
Steve001 is offline  

light, reef light

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