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Discussion Starter · #1 ·
Hi,

I know that ppm = Parts per million, a common unit of measure.

But still I do not get how much I CO2 30 ppm is ...

I'm fighting some black brush algea and I've been recommended to use 30 ppm of CO2..

Thanks,

Johnny
 

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Discussion Starter · #4 ·
Thanks for the quick reply on both subjects. I thought that maybe that ppm was related to how many bubbles of CO2 pr min or something like that, but I'll get a drop checker.

As for the BBA, the easy fix for me is to remove it, but I would really love to know how to kill it.

Thanks.
 
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