Betta Bowl Plus water conditioner neutralizes the chlorine and chloramines typically found in tap water, making it safe for fish. It helps to reduce the stress on fish as they become familiar with their new environment and helps to restore the natural slime coat to skin and gills, which can be worn away from netting and transporting fish. Aqueon Betta Bowl Plus water conditioner is formulated especially for smaller betta bowls where filtration and water circulation is limited.