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Old 06-29-2004, 11:27 PM   #1
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Lighting question

I have a friend locally that is trying to advise me on setup of my sump, he has stated that I should get a light for my sump and a timer for both lights so that when the tank lights go on the sump lights go out and when the main lights go out then the sump lights come on. His resaoning for this is that with out light the co2 levels rise in the tank (I don't know if this is true or not), and that by having a sump that is lighted alternatly then it will help to stabilize the tank o2 levels. Am I being fed bull? 8O
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Old 06-29-2004, 11:35 PM   #2
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I do this with my fuge but I have never seen anyone light the sump. Nothing in there really needs it.

Just because I have not seen it does not mean people don't do it though
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Old 06-29-2004, 11:44 PM   #3
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Unless there's algae in the sump (which would then be a fuge) this makes no sense to me
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Old 06-29-2004, 11:48 PM   #4
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He also said I need to get "mangroves"? to go in my sump. Something about pods?
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Old 06-29-2004, 11:51 PM   #5
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What exactly is the diff between a sump and a fuge? I was thinking about some sand and maybe some rock in the sump. Would that make it a fuge?
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Old 06-30-2004, 12:19 AM   #6
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A refugium is an "refuge" where animals and plants can live without being eaten by the fish. These are usually pods and macroalgae. What you buddy told you is true. See, there is algae in your tank that converts CO2 in the water, water, and light from the tank into glucose(sugar) for itself and releases O2. At night, however, the algae goes through respiration, where it converts the glucose into usable energy. This uses up oxygen in the tank, taking it away from your fish. By having the fuge light on a opposite time as the tank, there will always be some algae producing oxygen. Also, mangroves are a plant the grows in the estuaries of rivers, so it can go in either fresh or salt. It's roots are the only things in the water, so to keep it your light must be well away from the water of the mangrove will reach it a burn itself.
http://www.churaumi.net/nature/mangrove.jpg
This shows them full grown.
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Old 06-30-2004, 07:44 AM   #7
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Thanks, maybe I don't want them, they would be growing out the back of my stand.
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Old 06-30-2004, 01:18 PM   #8
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I've never seen fully grown mangrooves, but the ones I have in a pot at home are only stalks with the roots burried in gravel filled with water. They are about 1-1/2 ft tall.
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Old 06-30-2004, 01:28 PM   #9
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I was thinking about some sand and maybe some rock in the sump. Would that make it a fuge?
Yes it would

Sounds like you want a sump and fuge together. Alot of people do this. With the right baffles should be easy. I got a acrylic sump that I am going to use that has a return area, then an area for the skimmer, then an area for a fuge and then the return pump area all in one container. this would be a sump/refuge combo

If this is the case then you would want a light on the area that has the sand and the macros. You could use the reverse lighting setup for the fuge or have the light on 24/7 for the fuge.
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Old 06-30-2004, 01:34 PM   #10
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With the right baffles should be easy. I got a acrylic sump that I am going to use that has a return area, then an area for the skimmer, then an area for a fuge and then the return pump area all in one container. this would be a sump/refuge combo
Sounds more complicated. 8O What I want to do is put the 29 gal tank under my stand, put some ls in it, maybe some rock, along with my emporor 400, skimmer, heater, ETC. If I start subdividing this tank there will not be any room for my equipment. 8O
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