PH drop from 7.5 to 7.0 in 9 hours safe?
i recharged my 1 liter co2 bottle last night around 8pm. i used 1 cup sugar and 1/2 teaspoon yeast. i just bought some really good wine yeast so i was interested in trying. the little reactor was going crazy last night discharging bubbles very frequently. i woke up around 7am and checked ph and it had dropped to 7.0 over night. i think i overdid it with the yeast. is that kind of ph change so rapidly ok? i'm not sure what tolerable change limits are regarding ph. all my fish seemed normal. its a 42 gallon tank and i didn't expect such a rapid change. it put my co2 from 7ppm to 19ppm overnight.