First Defense Helps Fish Adapt to New Environments

First Defense contains a mixture of vitamins and immunostimulants that work together to help fish and other aquatic organisms adapt and cope when introduced to new environments and stress that can occur with poor water quality conditions.

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.

4oz (120ml) bottle treats 908L
8oz (240ml) bottle treats 1817L
16oz (480ml) bottle treats 3624L
32oz (960ml) bottle treats 7267L
64oz (1920ml) bottle treats 14534L

Please note that 4oz and 8oz bottles are sold in packs of 6 and 4 respectively.