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post #1 of 4 (permalink) Old 07-15-2012, 04:40 AM Thread Starter
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co2 questions

I run pressurized co2 on my 40 gallon tank. It is diffused using a GLA atomic inline diffuser. I am not sure how many bubbles per second, I am using a GLA bubble counter that you can have either positioned for high flow or low flow, and since I run quite a bit of co2, I positioned it in the high flow position. It puts out bigger bubbles at less of a speed so they are easier to count. The way it counts now, I am getting one large bubble per second or so, and I think that calculates to about 3 bubbles per second. Anyway, I just started running the co2 24/7 now because I was getting quite a bit of BBA starting to grow(taking over the tank is more like it). My drop checker reads about the same as the reference solution, so maybe 30ppm? The surface is agitated as much as I can get it without raising the outflow above the water line, which would just splash water everywhere. The problem I am having is this: during the day, the co2 reads normal, but a couple hours after lights out, the indicator is yellow. A couple days ago, my Siamensis jumped out of the tank during the night to his untimely demise. I am afraid if I keep running the co2 24/7, any fish I might buy will just end up facing the same fate.....but if I don't run the co2 24/7, the BBA will just take over......believe it or not, in just a week with the co2 running all the time, the BBA has stopped spreading and is actually going away. Also, the rest of my algae problems also seem to be going away, and the cloudy water is finally clearing up after 6 months of Volvox horror. Anyway, is there a way to further offgas the co2? I have already made it to where the outflow is agitating the water as much as possible, and I don't have a spray bar for my filter since I broke it......
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post #2 of 4 (permalink) Old 07-15-2012, 05:03 AM
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Surface agitation is key, get the spray bar!
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post #3 of 4 (permalink) Old 07-15-2012, 05:07 AM
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Do you have a spare powerhead or air pump? Use the timer to power which ever one you have to agitate the water during lights out.


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post #4 of 4 (permalink) Old 07-15-2012, 11:22 PM Thread Starter
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I have an air pump, and I think I have a spare powerhead too.....I will look.
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