Component A StrongComponent contains concentrated strontium and barium. The amount of strontium and barium depends on requirements for magnesium and calcium. 5 ml should be added to 1 litre of ready solution of calcium chloride. Recommended use with Aquaforest Calciumproducts. Capacity: bottle of 75mlUS:19ml should be added to 1 US gal. Component B StrongComponent contains concentrated heavy metals. The amount of heavy metals depends on requirements for magnesium and calcium. 5 ml should be added to 1 litre of ready solution of calcium chloride. Recommended use with Aquaforest Calciumproducts. Capacity: bottle of 75mlUS:19ml should be added to 1 US gal. Component C StrongComponent contains concentrated iodide and fluoride. The amount of iodide and fluoride depends on requirements for calcium. 5 ml should be added to 1 litre of ready solution of sodium bicarbonate. Recommended use with Aquaforest® KH Buffer product. Capacity: bottle of 75mlUS:19ml should be added to 1 US gal. Component K StrongComponent contains concentrated potassium. The amount of potassium depends on requirements for magnesium and calcium. 5 ml should be added to 1 litre of ready solution of magnesium chloride and mineral salt. Recommended use with Aquaforest® Magnesiumand Reef Mineral Saltproduct. Capacity: bottle of 75ml.US:19ml should be added to 1 US gal. STRONG A1 ml of Strong A in 100 l of aquarium water will raise levels:Strontium (Sr) 0,32 ppmBarium (Ba) 0,000055 ppm STRONG B1 ml of Strong B in 100 l of aquarium water will raise levels:Iron (Fe) 0,00052 ppmManganese (Mn) 0,00024 ppmCopper (Cu) 0,000075 ppmZinc (Zn) 0,000082 ppmNickel (Ni) 0,000062 ppmChromium (Cr) 0,00023 ppm STRONG C1 ml of Strong C in 100 l of aquarium water will raise levels:Potassium (K) 0,0032 ppmIodine (I) 0,0046 ppmFluorine (F) 0,03 ppm STRONG K1 ml of Strong K in 100 l of aquarium water will raise levels:Potassium (K) 1,0 ppm