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Hi. Some of us in Portugal use the following formula:

liters x 13 / 100 = number of bubbles per minute

so in my 120l tank I should have about 15 or 16 bubbles a minute.

(1 gallon = 3.785 liters US or 4.546 liters, British Imperial System)
I don't know how accurate this formula is, though...:roll:

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Sure. And also if you have a reactor or if you just let the bubbles come out directly from the tube into the water (less effective). Just be careful, use the chart and keep in mind that drastic Ph changes can kill the fish.
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Hi. Giancarlo your article is very helpful, specially for newbies like myself. For instance, I always changed the amount of sugar, thinking it would be more effective (I'll stop doing that). By the way I always use baking soda in my mixture. I was told it doesn't "allow" drastic Ph changes. In fact, values remain stable with baking soda. Have you got any input on this?
Thanks.
Regards.

By the way, I like your final advice. :)
 
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