First Defense Stress Relief & Immune Support – Freshwater (8 oz)

First Defense Helps Fish Adapt to New Environments

• Reduces Stress and Supports Immune Health
• Neutralizes Chlorine, Chloramine, and Heavy Metals
• Buffers Against Sudden pH Changes
• For Freshwater Aquariums

Changing the environment of a fish causes stress that robs the fish of essential nutrients and can weaken their immune system. First Defense is scientifically designed to provide stress relief and support the immune system, helping fish cope with stress due to bagging and shipping from the store to your tank, water changes, new fish additions, disease treatments and other environmental changes.

First Defense also neutralizes chlorine and chloramine, buffers against pH changes, and detoxifies heavy metals. First Defense should be used when doing partial water changes, during disease treatments and when fish are showing signs of stress.

Have a Saltwater Aquarium?

First Defense (Saltwater) is also available!