T5HO lighting for 46g bowfront
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 01-27-2013, 09:40 PM   #1
unicknn
Algae Grower
 
PTrader: (0/0%)
Join Date: Jan 2013
Location: Mesa,Az
Posts: 34
Default

T5HO lighting for 46g bowfront


Measurments for the tank are 36l x 16d x 20t

I was thinking about getting a 36" 156W light with 4 bulbs but think that might be way more light than I need. Would I be ok going with just 2 36W bulbs?

Thanks
Nick
unicknn is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-27-2013, 10:01 PM   #2
owens81jw
Planted Tank Enthusiast
 
PTrader: (16/100%)
Join Date: Feb 2009
Location: new york
Posts: 689
Default

Quote:
Originally Posted by unicknn View Post
Measurments for the tank are 36l x 16d x 20t

I was thinking about getting a 36" 156W light with 4 bulbs but think that might be way more light than I need. Would I be ok going with just 2 36W bulbs?

Thanks
Nick
4 bulbs = Too much light!!!

I think 2 bulbs might be ok , are you using co2?
owens81jw is online now   Reply With Quote
Old 01-27-2013, 10:10 PM   #3
unicknn
Algae Grower
 
PTrader: (0/0%)
Join Date: Jan 2013
Location: Mesa,Az
Posts: 34
Default

Yes I will be using CO2 and more than likely ferts as well. Is 2 going to be enough or would it be better to just get the 4 bulb fixture and just use 3 of them?
unicknn is offline   Reply With Quote
Old 01-27-2013, 10:55 PM   #4
owens81jw
Planted Tank Enthusiast
 
PTrader: (16/100%)
Join Date: Feb 2009
Location: new york
Posts: 689
Default

Quote:
Originally Posted by unicknn View Post
Yes I will be using CO2 and more than likely ferts as well. Is 2 going to be enough or would it be better to just get the 4 bulb fixture and just use 3 of them?

I personally think 3bulbs will cause u algae problems ..
If you plan on upgrading to a bigger tank within a yr . Just get a 2 bulb t5 system ... Catalina aquarium lights are great..

Which lighting system you wanted to buy?
owens81jw is online now   Reply With Quote
Old 01-28-2013, 12:56 AM   #5
mitchfish9
Planted Tank Nation
 
PTrader: (3/100%)
Join Date: Apr 2012
Location: Oak Park, IL
Posts: 886
Default

It does depend on the brand of light. But two bulb of t5HO is more than enough in most instances.

Btw if you are using CO2, then you definitely need to use ferts as well.
mitchfish9 is offline   Reply With Quote
Old 01-28-2013, 04:38 PM   #6
unicknn
Algae Grower
 
PTrader: (0/0%)
Join Date: Jan 2013
Location: Mesa,Az
Posts: 34
Default

Im going with a cheap Odyssea.
unicknn is offline   Reply With Quote
Old 01-28-2013, 04:59 PM   #7
MarkM
Planted Tank Obsessed
 
PTrader: (0/0%)
Join Date: Sep 2012
Location: Hampstead, NC
Posts: 333
Default Lights

I have a 50g tank and I use T5HO. I have about 17" from substrate to bulb. One bulb give me a par of 45 or just into the medium range. Two bulbs would put me over the top of high range.

4 x T5HO is too much.
MarkM is offline   Reply With Quote
Old 01-28-2013, 05:08 PM   #8
unicknn
Algae Grower
 
PTrader: (0/0%)
Join Date: Jan 2013
Location: Mesa,Az
Posts: 34
Default

my light will be about 20" from the subtrate
unicknn is offline   Reply With Quote
Old 01-28-2013, 05:17 PM   #9
Seattle_Aquarist
Planted Tank Guru
 
Seattle_Aquarist's Avatar
 
PTrader: (34/100%)
Join Date: Jun 2008
Location: Seattle, WA
Posts: 2,527
Default

Quote:
Originally Posted by unicknn View Post
Measurments for the tank are 36l x 16d x 20t

I was thinking about getting a 36" 156W light with 4 bulbs but think that might be way more light than I need. Would I be ok going with just 2 36W bulbs?

Thanks
Nick
Hi Nick,

I have a 45 gallon tall (36"X12"X24" tall) with CO2 and Ei ferts and have very good success growing all species (including foreground plants) with 1X96 watt AH Supply power compact kit. I would suggest about the equivalent amount of lighting on your tank if your light has quality individual reflectors.

__________________
Roy
45 Gallon Tall; 96 Watt AH Supply CF; 6700K; & 30 Gallon Long; 2X36 Watt AH Supply CF; Press. CO2; UGF; Heat Treated Montmorillonite Clay
Greater Seattle Aquarium Society (GSAS)

Seattle_Aquarist is online now   Reply With Quote
Old 01-28-2013, 05:51 PM   #10
DarkCobra
Planted Tank Guru
 
DarkCobra's Avatar
 
PTrader: (5/100%)
Join Date: Jun 2004
Location: Baton Rouge, LA
Posts: 3,349
Default

From this thread:



Assuming you have 20" between the bulbs and substrate, you get 50 PAR at the substrate, which just qualifies for high light.

Notice how the line for the Odyssea drops much faster than others at longer distances. It's my understanding this is due to unusually poor reflectors, and bulbs spaced too close together; both of which reduce the amount of light thrown downwards where we really need it. So you may run into issues with algae as plants approach the top of the tank and receive too much light. But if you raise the fixture to compensate for that, then plants at the substrate may not get enough light. In fact, I'm currently in a PM exchange with someone who seems to have had this exact problem with the Odyssea.

Though I wouldn't consider the Odyssea completely unusable by any means, it is a case of you get what you pay for. So I'd do a little more shopping and research before committing to it. I'm afraid I can't give any personal recommendations for commercial alternatives, as I built the 2x T5HO fixture for my 46G bowfront, and to some rather unusual specifications.
DarkCobra is offline   Reply With Quote
Old 01-28-2013, 07:03 PM   #11
unicknn
Algae Grower
 
PTrader: (0/0%)
Join Date: Jan 2013
Location: Mesa,Az
Posts: 34
Default

Yea I know its not the best light out there and Im expecting to change it out in the future but it'll get me started. Ive dumped alot of money into this project and still have alot to go.
unicknn is offline   Reply With Quote
Old 02-05-2013, 02:16 AM   #12
alby
Newbie
 
PTrader: (0/0%)
Join Date: Feb 2013
Location: newcastle nsw
Posts: 1
Default still getting head aroung PAR

Hi im a newby to aquascaping and doing my best to get all the hardwhere sorted before i start. Some people are saying that a total of 96 watt of t5ho tould be more than enough for a co2 injected planted tank. My tank is a 60 cm cube and im having a lot of conflicting advice on how much lighting i need for a medium lighted tank. 96watts with t5ho on a 60cm cube is 4 24w tubes. IS this too much. please help.
Ta
alby is offline   Reply With Quote
Old 02-05-2013, 10:31 PM   #13
unicknn
Algae Grower
 
PTrader: (0/0%)
Join Date: Jan 2013
Location: Mesa,Az
Posts: 34
Default

well it depends on which light it is. If its a cheapo Odyssea like the one I just ordered:

http://www.amazon.com/dp/B007T9JBB4/..._M3T1_ST1_dp_1

You could probably stand to have more power than the 96W kit that was posted earlier.
unicknn is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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 06:23 AM.


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