"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 and feed NutriDiet? Discus Flakes for thriving, healthy Discus.
Contains phosphate buffers and conditioning agents. Safe
for all freshwater fish acclimated to acid pH."