ProScape Fe +Microelements is the primary care for plants, basic fertilizer for aquascaping aquariums. It full with iron and a lot of other trace elements, help plant grow healthily. Dosing is dependent on the intensity of the lighting, CO2 supply and consumption. How to Use: Use daily: 10 ml/100 l in high power light + CO2; 3x weekly: 4 ml/100 l high power light/no CO2; daily: 4 ml/100 in weak light conditions + CO2; weekly: 2 ml/100 l in weak light conditions/no CO2