DIY CO2 and other questions. - The Planted Tank Forum
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post #1 of 2 (permalink) Old 08-01-2009, 07:58 AM Thread Starter
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Exclamation DIY CO2 and other questions.

I am planning on growing HC and crystalwort. I have a couple of questions. My friend says that growing HC requires some form of external CO2 other than my fish for it to grow. Is that true? Another question, what is the exact wattage I have to get for a 10 gallon medium planted tank. My fixtures are screw ins. Also, I read the forums and stuff and want to make a DIY CO2. I have the 2 liter bottle and the tubing but other than that I have no other way of keeping the CO2 to diffuse into the water. Can anyone help me please?

Thank you in advance.
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post #2 of 2 (permalink) Old 08-01-2009, 02:19 PM
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Growing HC in general requires high light. As a result of high light, you will also need to dose fertilizers as well as inject CO2 (whether this is pressurized CO2 or DIY CO2 is up to you).

With a 10g tank, it is difficult to say the "exact" wattage that is required - the WPG guideline breaks down for small and large tanks. You can start off with two 13W compact screw ins, and if the HC doesn't do too well, you can always switch them out for something more powerful.

For DIY CO2, the most common "formula" is:
2 cups sugar
1/2 teaspoon yeast
Water to fill the 2L pop bottle 3/4 full.

And that's essentially it. Various methods of diffusion exist, but for DIY CO2, I would simply feed the tubing into the filter intake and let the impeller chop up the bubbles.


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