This mornings readings:
PPM 218
pH 6.3
There was no flood/drain since last readings. I know why the pH jumped though. Running the kerosene heater in that building (detached from my house) raises the CO2 levels to 1700-1900ppm. CO2 bubbled through water creates weak carbonic acid, thus lowering the pH. I set the pH last night while CO2 was high. Heater is off over night as the grow room has it's own heat. So through the night, the CO2 content of the res drops...and the pH climbs. I'm going to setup an air draw from outside for my airpumps. I ran into this exact issue with my reef tanks a while back... Luckily, no flood/drain cycles ran while the pH was that high. I adjusted it back to 5.7 this morning pre-flood.
PPM 218
pH 6.3
There was no flood/drain since last readings. I know why the pH jumped though. Running the kerosene heater in that building (detached from my house) raises the CO2 levels to 1700-1900ppm. CO2 bubbled through water creates weak carbonic acid, thus lowering the pH. I set the pH last night while CO2 was high. Heater is off over night as the grow room has it's own heat. So through the night, the CO2 content of the res drops...and the pH climbs. I'm going to setup an air draw from outside for my airpumps. I ran into this exact issue with my reef tanks a while back... Luckily, no flood/drain cycles ran while the pH was that high. I adjusted it back to 5.7 this morning pre-flood.