Low sodium & phosphate free for sodium sensitive fish such as Discus, Catfish, Apistogrammas & Tetras. Amazon conditioner helps emulate the waters from the Amazon basin, by gently raising the mineral balance. This product contains the essential minerals, elements & trace elements required for sodium sensitive fish such as Discus, Catfish, Tetras, Apistogrammas & Angel fish & raises the essential minerals to help osmosis control in your fish. When used as directed it will raise gH (General Hardness) by approximately 7dgH (125ppm) Add 1 heaped teaspoon (8 grams) to 20 Litres of water