Seachem Discus Buffer helps to replicate the ideal Discus environment (low pH & low GH (General Hardness)). Seachem Discus Buffer will lower pH and keep it lowered. Discus Buffer also softens water by precipitating calcium and magnesium. Seachem Discus Buffer+ adjusts pH to 5.8 - 6.8+ helps to replicate the ideal Discus environment+ 250 g are sufficient for up to 3,000 l of aquarium water Application of Seachem Discus Buffer:Use 1 level teaspoon (5 g) for every 40-80 L daily until intended pH is reached. Thereafter, use once a month or with water changes as required to maintain pH.