The Dennerle Nano Care Set contains the most important care products for nano aquaria in one set:Dennerle Nano Water Conditioner: Makes tap water safe for mini aquaria. Special protection formula for shrimps, crabs and crayfish+ neutralises dangerous chlorine immediately+ binds toxic heavy metals such as copper, zinc and lead+ adds natural bio-active ingredients and care substances+ 15 ml for 150 l of fresh waterDennerle Nano Crusta-Fit: Vital substances for shrimps, crayfish and crabs+ for good health and brilliant, rich colours+ vital vitamins and trace elements+ with bioactive calcium for problem-free moulting+ 15 ml for 600 l of aquarium waterDennerle Nano Daily Fertilizer: Complete fertilizer for magnificent plants in mini aquaria+ highly active nutrients - immediately effective+ for rich green leaves and radiant colours+ phosphate- and nitrate-free - does not promote algae growth+ 3x15 ml for 3,000 l of aquarium water