For those of you who dose alk 1 x per day, are you using sodium bicarb rather than sodium carbonate? If I dosed with sodium carb once a day my pH would probably jump to 9 or 10. I'm using sodium carbonate 12hrs a day (evenings) once an hour with a dosing pump. Actually having a difficult time keeping my alk up with the new larger tank. Thinking I may have to mix carb and bicarb together so I dont have my pH bounce too high
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