DIY Co2 20 gal long?? help - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 10-13-2006, 07:02 PM Thread Starter
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DIY Co2 20 gal long?? help

Im about to start a nice planted tank with a 20gal long tank and 1x65W light 6700K

Do I need C02? if so.. what should the ingredients be (how much?) remember its for a 20gal long tank.
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post #2 of 6 (permalink) Old 10-13-2006, 07:12 PM
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Yes you will need CO2 or you will get algea.

I use
3qt juice container
4 Cups Sugar
fill the container 75% with hot tap water, Shake
1/8th teaspoon baking soda
1/2 tablespoon yeast

This lasts me about a month

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post #3 of 6 (permalink) Old 10-13-2006, 07:27 PM Thread Starter
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Im trying to do everything I can without using Co2.... maybe have the light on for 6 hrs then 1 hr off.. then another 6 on? that should break up the algea growing period right?
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post #4 of 6 (permalink) Old 10-13-2006, 07:32 PM
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i used to have 25 gallon long and I used two 2-liter DIY CO2 bottles, which almost weren't enough. So I would use two bottles in your case and then it should be perfect.

my recipe (lasts 4 weeks):
2 cups sugar
1/4 teaspoon baking soda
1/8 teaspoon Champagne yeast
fill to the 'shoulder' of bottle with tepid/warm water

for best results, alternate changing the bottles so the levels of CO2 stay as stable as possible. You can also use baking yeast (Fleischman's) but lower the water a little because baking yeast foams at the top. Also, baking yeast will only last about two weeks before it needs to be changed. If your tapwater is really soft, increase the amount of baking soda to 1/2 teaspoon.

If you really don't want to use CO2, then use Excel instead. You should add 2mL per day for that size tank. But with 2.5 wpg, you're DEFINITELY going to need something for carbon/CO2.
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post #5 of 6 (permalink) Old 10-13-2006, 07:50 PM
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Try Excel first, if it doesn't work and you get algea blooms, switch to DIY CO2.
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post #6 of 6 (permalink) Old 10-13-2006, 07:53 PM Thread Starter
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Opps I forgot to mention that I will be using Excel.... I will definetly use Excel first before trying Co2...
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