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Originally Posted by BCOrchidGuy
What kind of media are you using, I'd start with about 30 bubbles a minute and then measure your pH and aim for the recomended pH the media manufacturer suggests. I used ARM and found that 19 bubbles a minute gave me a pH of 7.48 or 7.49 the ARM packaging said to get a pH of 7.5,
Doug
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one problem to quantify 30 bubbles per minuit you have to also state a effulent flow.
I started mine at 60 bubbles per min with a effulent flow of 100 ml/min but this will also depend on tank size.. if you want to start at 30 bubbles per min I would sugest starting with a efulent flow of 50ml/min and then adjust your effulent flow to set your PH. this will alow you to have ahigher flow for a Ca demand heavy tank. and after you get that set you can play with both to fine tune it.
Steve
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