Preparation with active cobalt ions intended for fish and plants in freshwater tanks. Significantly increases growth and enhances coloration, after only 14 days of treatment colours are heavily saturated and contrast-rich. It is especially recommended for aquaria with live-bearers, ex. guppies, swordtails, mollies, etc. Many years of observation prove that cobalt ions have a stimulating influence on the growth, health, and coloration of aquatic plants that have red-coloured leaves. It is recommended to use KOBALTOSAN every time the water is changed. To supplement the aquarium water with other macro nutrients and trace elements which fish and plants need, we recommend other Tropical preparations: MULTIMINERAL, FERRO-AKTIV, AQUA PLANT, AQUA PLANT B.