I'm honestly a bit confused regarding the relationship of ph/kh
even after plenty of research. As of right now, my tank has no co2
injection and is currently using Tropica AquaSoil. This soil brings down the KH
and pH. My tap water is already next to 0KH and 6.8pH, and the substrate brings it down to some tiny KH
number (0.0???) and 6.4pH.
From my understanding the lower the KH
is, the less CO2
is in the system (holding pH constant). If my KH
is practically 0.0 due to the active substrate, wouldn't that suggest that the CO2
levels are essentially non-existent, and that any CO2
injection won't really change the CO2
Even if my KH
isn't exactly 0.0, say 0.1 or 0.2, wouldn't getting a CO2
to any decent level (say 15ppm) require an insane change (more than 1 point for sure) in pH? I don't necessary need to get my CO2
to 30ppm, but having it get to 10 or 15ppm would be nice, but I'm concerned about the drastic pH fluctuation. Has anyone had experience working with active substrate that brings KH
down to the zeros?