[Jonesrd1]

I would suggest that you slowly increase your acetic acid dose and mix the vinegar into saturated kalk. My tank is going on four so still a baby but I add 80 mL to a water volume of 60 gallons. I have never had bacterial overgrowth but it took me six months to get to 80 mL. I also recommend adding the kalk saturated vinegar as a bolus first thing in the morning. I have had no visable HA for the last ~3 years. Also I have a very large CUC. No promises but it works for me. Ron