45G, Too much light for a high light tank?
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


 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 01-24-2013, 07:18 PM   #1
parker679
Algae Grower
 
PTrader: (1/100%)
Join Date: Nov 2012
Location: Florida
Posts: 22
Default 45G, Too much light for a high light tank?

45G Tank (36 X 13 X 24)
2 - 36inch Odyssea 2 bulb T5HO sets. 78W per set. My understanding is that these use an inferior ballast/reflector and thus behave more like T5NO with regards to light output.
Aprox. 2 inches of substrate and light sits one inch above tank
Pressurized CO2, lime green 5dkh drop checker
Dose PPS Pro, currently just the macros per PPS and micros via Flourish until I finish the bottle

When I started I had one light set and no CO2. Before I knew about the whole par thing I got a second set to get closer to 3-4wpg. I got algae and started to research more. I found Hoppy's chart and according to it I was at 40 par with one set which he considered square in the middle of the medium lighting spectrum. So I figured 2 sets would be high light and I got a CO2 set up and started dosing PPS Pro.

I know having 2 lights doesn't double the par exactly, only on those areas where the light spread overlaps.

My question is, is this too much light and where is the max threshold for high light before having more is counter productive?

I would prefer not drop to one set because it would put me back in the medium light range. I'm thinking maybe if I raise them 6 inches above the tank that will put the light 28 inches from the substrate and put me in the area of 60 par where the light spread overlaps.

Thoughts? Or is my understanding of all this just completely wrong? Thanks!

Last edited by parker679; 01-24-2013 at 07:37 PM.. Reason: Updating title so it's not so generic.
parker679 is offline   Reply With Quote
 

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 02:30 AM.


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