Lighting for a 75 g planted tank - The Planted Tank Forum

 
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post #1 of 8 (permalink) Old 05-06-2013, 04:42 PM Thread Starter
Algae Grower
 
Join Date: May 2013
Location: TX, USA
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Lighting for a 75 g planted tank

I'm a returned hobbist and is setting up a 75 gallong glass tank with a lot plants. Was keeping planted fish tank 20 years ago on a lot tech base and was quite successful, even with two generation angels and sold some plants to LFS.

I'm planing to use DIY CO2 system (Do not want the trouble with pressurized system, and do not want to inject a lot of CO2) and two Eheim 2215 filters. Will keep up to 7 angles and two dozen cardinals, with a few Otos to keep the tank clean. My question is, what type of light to use. Here are the options:

2 strip lights of T5,
2 trip lights of T5HO,
LED.

The problem with T5 or T5HO is that it is quite hot. Here in Texas, I do not want additional heat source in the summer, regardless.

I wound want to go wiht LED, but con't find a reliable source, do any of you have any recommendations, what is the advantage and disadvantage. The initial investment wiht LED is high, so I want to get it right.

Thanks.
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post #2 of 8 (permalink) Old 05-06-2013, 04:45 PM
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welcome back

DIY CO2 in a tank that bigger will bug the hell outta you after a while

i said you should go with low light plants

and look at Finnex Fugeray 48in (LED)
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post #3 of 8 (permalink) Old 05-06-2013, 04:55 PM
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Hi,

Finnex Ray 2 DS - 7000K is more powerful than Fugeray. I think it would be better with a tank of your size and CO2.

DIY CO2 in a 75G is complicated. You will probably end up with pressurized CO2.

Michel.

Plants and algae grower.
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post #4 of 8 (permalink) Old 05-06-2013, 05:40 PM Thread Starter
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Thanks for the advice, maybe I should go wiht the pressurized CO2 everntually, but not now. Never believed that you need 30 ppm int he tank.
Back to lighting, so LED is the way to go then. Now one strip or two?
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post #5 of 8 (permalink) Old 05-06-2013, 06:28 PM
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The best is to go on Finnex website, check the PAR ratings they give with the depth of your tank for their fixtures. On this section also you can find explanation on PARs, what is high light, low light etc.

Michel.

Plants and algae grower.
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post #6 of 8 (permalink) Old 05-07-2013, 04:16 AM Thread Starter
Algae Grower
 
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Could not find the related information, searched all over their site. Could you provide a link?

Thanks
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post #7 of 8 (permalink) Old 05-07-2013, 03:21 PM
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Lighting articles and FAQ

Plants and algae grower.
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post #8 of 8 (permalink) Old 05-08-2013, 01:51 PM Thread Starter
Algae Grower
 
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there are data, but no source. I want to know the spectrum of the Ray 2, especially those in the red light range, who can help me?
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