Makes Tap water safe for fish Works instantly Protective Aloa Vera Although fish love water, tap water can be bad news for your goldfish. Gold Tap Safe treats your tap water to make it safe for your goldfish, by removing harmful chlorine and heavy metals from the water. It also helps protect your fish with protective colloids, which give the goldfish a protective layer around their delicate skin and gill membranes. For use in all tanks, bowls and orbs. Use as part of your regular maintenance program, when changing or refreshing water for healthier, longer-lived fish