wanting medium-high light for 20 long
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Old 11-01-2011, 08:12 PM   #1
andymac
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Default wanting medium-high light for 20 long

I've done a lot of research on lighting since buying a 20 gallon long (12 inches tall). Initially I wanted to go with a 2x24 watt T5HO Catalina fixture, but after reading a lot of horror stories on high light algae outbreaks, I'm not sure I'm ready for that realm of lighting yet.

This is what I'm currently thinking
http://www.catalinaaquarium.com/stor...oducts_id=1168

would 130W of PC be less than or equivalent to 48W of T5HO? If 130W is too much, they have a 65W version.. which fixture would put me in the medium-high light range?

I would be going for 2 T5NO Coralife fixtures if they still made them...

I have DIY CO2 with EI fertilizing, and am aiming for a heavily planted tank. I do have the option of raising the lights up to about 12" above the tank. Thanks!
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Old 11-01-2011, 08:54 PM   #2
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Quote:
Originally Posted by andymac View Post
I've done a lot of research on lighting since buying a 20 gallon long (12 inches tall). Initially I wanted to go with a 2x24 watt T5HO Catalina fixture, but after reading a lot of horror stories on high light algae outbreaks, I'm not sure I'm ready for that realm of lighting yet.

This is what I'm currently thinking
http://www.catalinaaquarium.com/stor...oducts_id=1168

would 130W of PC be less than or equivalent to 48W of T5HO? If 130W is too much, they have a 65W version.. which fixture would put me in the medium-high light range?

I would be going for 2 T5NO Coralife fixtures if they still made them...

I have DIY CO2 with EI fertilizing, and am aiming for a heavily planted tank. I do have the option of raising the lights up to about 12" above the tank. Thanks!
would be why high lighting is out for you

get a 2x14w T5NO fixture instead (you would be low-med)
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Old 11-01-2011, 09:03 PM   #3
Daximus
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@Optix

Would they be ok with just one of those? The lights are independently switched.
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Old 11-01-2011, 09:22 PM   #4
andymac
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I'm looking for a little more than low-med light, I want to grow a nice low carpet of eleocharis parvula.

so is even 65W of PC out of the question? I think that my DIY CO2 will suffice for a med-high light, I run three 2 liter bottles and change the bottles every two weeks (not all at once)
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Old 11-01-2011, 09:37 PM   #5
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@Optix

Would they be ok with just one of those? The lights are independently switched.
1 light + his ability to move it up and down should probably work -but again, I would shoot for less light (a single T5HO can still get him too high for inconsistent DIY CO2)

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Originally Posted by andymac View Post
I'm looking for a little more than low-med light, I want to grow a nice low carpet of eleocharis parvula.

so is even 65W of PC out of the question? I think that my DIY CO2 will suffice for a med-high light, I run three 2 liter bottles and change the bottles every two weeks (not all at once)
would do just fine in low-med light (a strain of DHG right?) I have a DIY 2x14w T5NO (~6" above tank) fixture on a 20L tank and had a carpet of DHG (just removed it because I wanted to go back to glosso -growing emersed in a windowsill for another month or two probably before I have enough to start)

people want to be in teh high light range too often without understanding what it really entails ...low-med light = freedom to make mistakes and TIME to correct them
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Last edited by Optix; 11-02-2011 at 02:21 PM..
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Old 11-01-2011, 11:22 PM   #6
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1 light + his ability to move it up and down should probably work -but again, I would shoot for less light (a single T5HO can still get him too high for inconsistent DIY CO2)
10-4! I wasn't trying to be wise, just asking questions. Thanks

/threadjack, lol
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Old 11-01-2011, 11:07 PM   #7
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Look at the first couple of posts and charts here:

http://www.plantedtank.net/forums/li...t5-t12-pc.html
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20 gallon, catalina, medium light, pc lighting, t5ho

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