Discus Buffer™ helps to replicate the ideal Discus environment (low pH & low GH (General Hardness)). Discus Buffer™ will lower pH and keep it lowered. Discus Buffer™ also softens water by precipitating calcium and magnesium. Use Discus Trace™ to restore the proper level of trace elements required by thriving, healthy Discus. Neutral Regulator and Discus Buffer™ can be used in combination to achieve a desired pH when performing water changes or adding top off water. The ratio chart below is designed for r/o water where there is generally no buffering capacity.