When pH instability is a problem and pH Up or pH Down are not fixing it (as they are simply band aids on the problem), the solution lies in raising the KH (carbonate hardness) of your water. Basics Neutral KH Buffer raises KH, adjusts pH up or down as required and locks pH at around 7.0. This stops pH fluctuation, reduces stress on fish and contributes to their good health and longer life.
Directions: 1 rounded teaspoon to 10 litres of water will raise the KH by approximately 6dKH or 100ppm and balance pH to around neutral 7.0. For best results, use in conjunction with the appropriate Basics GH Conditioner.