Interpet Aquarium Fresh Start No.1 100ml Because tap water contains chlorine and heavy metals, it is toxic and aggressive to fish' delicate skin and gill membranes. Fresh Start rapidly removes these toxic chemicals and metals and contains a natural colloid which coats the fish with a protective barrier. Contents: 100ml Fresh Start Pipette Measuring Cap Guide to Fish Health Treats 500 litres (e.g. aquarium 5ft x 2ft x 2ft) Price: £4.29 Quantity: