Jungle Pond Start Makes Water Safe For Pond Fish Immediately. Use Pond Start With All New Pond Water And Whenever Adding Tap Water To The Pond. Improves And Ages Water. Removes Harmful Chlorine And Chloramine Instantly And Neutralizing Copper, Lead, Zinc And Other Heavy Metals. Stimulates The Fish"s Beneficial Natural Slime Coat, Which Can Be Lost During Handling, Netting, Spawning, Injury, Disease And Other Items Of Stress. Adds Vital Electrolytes And Provides Long-Term Protection From Nitrite Poisoning. Will Not Alter The Ph. For Containerized Ponds Only. Safe For Ornamental Pond Fish And Plants. Not For Use On Food Fish.