Need help with plants/equipment for tank - The Planted Tank Forum
 
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post #1 of 12 (permalink) Old 07-14-2006, 10:47 PM Thread Starter
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Need help with plants/equipment for tank

Hi, I have a 90 Gallon tank which contains about 24 small to medium community freshwater fish. I would like to add a decent amount of plants. I don't want to deal with the hassle of Co2 if I can avoid it. First question, I have a fairly large wet dry filter with about 6 gallons of bio-balls, I'm guessing it is very well oxygenated, is this going to hurt my chances of growing plants without a co2 setup or am I of base here. I've read that if you have alot of light (somewhere over 3 wpg) you may need co2. what is the corolation there? If I can add plants without co2, how much light should I use, and what are some hardy low light plants to start with?
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post #2 of 12 (permalink) Old 07-14-2006, 10:56 PM
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Your wet/dry filter will not only provide excellent filtration, but it will also aide in the release of any C02 you might have in your tank. If you are going to use it without adding C02 you will need to dose with Excell.

I used to think that a DIY C02 would be a royal PIA, it hasnt proved to be so far.

From what I understand the more light you use you will need C02. Even low light tanks benefit from C02.

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post #3 of 12 (permalink) Old 07-14-2006, 11:10 PM
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I haven't found pressurized Co2 to be a hassle. I would think pulling mounds of algae out of your tank each week to much more so.
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post #4 of 12 (permalink) Old 07-14-2006, 11:10 PM
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There is an article by George booth on the issue of losses.

http://www.hallman.org/plant/booth2.html

So it can be done. At worse you might burn through a little more gas.

Moved to Tucson.
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post #5 of 12 (permalink) Old 07-14-2006, 11:40 PM Thread Starter
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will adding co2 increase or decrease chances of algea growing and why? I don't have any at this time.
also why do I keep reading if you have a lot of light you need more co2 where is the corolation between the two.
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post #6 of 12 (permalink) Old 07-14-2006, 11:59 PM
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More light increase plants growing rate. Plants need C02 to grow. More light more C02

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post #7 of 12 (permalink) Old 07-15-2006, 12:04 AM
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Faster plant growth= less algae.
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post #8 of 12 (permalink) Old 07-15-2006, 12:10 AM
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Kind of like an internal combustion engine. You step on peddle, using more gas, and going much faster.
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post #9 of 12 (permalink) Old 07-15-2006, 12:15 AM
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Quote:
Originally Posted by indyglyder
will adding co2 increase or decrease chances of algea growing and why? I don't have any at this time.
also why do I keep reading if you have a lot of light you need more co2 where is the corolation between the two.

Of course you can be like the little old lady down the street who I've never seen going over twenty! Lower light, DIY co2, less ferts. I think there's a section here on this forum for the old grannies
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post #10 of 12 (permalink) Old 07-15-2006, 12:36 AM
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For a 90 gallon tank I think anything over 2 watts per gallon demands CO2. Plant growth is driven by how much light is available, and our job is to provide the nutrients, including carbon, that the plants need to grow at the rate the light is making them grow. When we don't do this, algae rapidly step in and use up whatever is there. (That's the really, really technical explanation!)

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post #11 of 12 (permalink) Old 07-16-2006, 12:46 AM Thread Starter
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I understand much better now, thanks. I am now thinking of putting in co2. by doing this will the fish have a lower quality water, does adding co2 replace oxygen or is it just added in. basically will adding c02 decrease my oxygen level?
can anyone recomend what type of co2 system I should use. maybe a diy one. One that the input rate can be controlled well.
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post #12 of 12 (permalink) Old 07-16-2006, 12:56 AM
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More C02 in a healthy tank will increase the plants output of oxygen

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