Gas removal - how long should it take? - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 02-23-2006, 09:12 PM Thread Starter
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Gas removal - how long should it take?

I am needing to do a quick assessment of my true co2 levels in my tank.

About 2 hours ago I took out about 1/2 gallon of water and have 2 large airstones aerating the water to push out the gases. from here I can tell how much the Peat moss (have tons of it as a substrate) is messing up my co2 calc.

question is, how many hours in to the aeration should I wait to do/trust any pH testing? With my tap water it takes about 3 hours to get to its true pH doing this. Don't know if co2 sticks around longer for any reasons though.

Cliff
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post #2 of 3 (permalink) Old 02-23-2006, 09:23 PM
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Usually we take a small sample of water from the tank, let it sit overnight in a water glass or cup, then test it next morning. That works for me. It isn't necessary to "outgas" the whole tank.

Hoppy
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post #3 of 3 (permalink) Old 02-23-2006, 09:52 PM Thread Starter
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Quote:
Originally Posted by Hoppy
Usually we take a small sample of water from the tank, let it sit overnight in a water glass or cup, then test it next morning. That works for me. It isn't necessary to "outgas" the whole tank.
I am testing it on a gallon piture, not the entire tank. i.e. co2 is still running in the tank.

I will leave it overnight as well. in no real hurry.

Cliff
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