What water to use for goldfish

Use dechlorinated tap water or water made for aquariums, not straight tap water. Goldfish do best in freshwater with a neutral to slightly alkaline pH, and they should not be kept in salt water.

Quick Scoop

• Best choice: dechlorinated tap water.

• Okay if needed: bottled or purified water, as long as it has the right minerals and stable parameters.

• Avoid: untreated tap water, distilled water, and salt water.

What goldfish need

Goldfish generally prefer water around 65-72 F, with a pH near 7.0 to 7.5, and they do best with some mineral content rather than water that is too “empty”. One source notes that goldfish tolerate a wider range, but still need water that is properly treated and stable.

Best practical setup

1. Fill the tank with tap water.
2. Add a water conditioner to remove chlorine and chloramine.
3. Make sure the tank is cycled and tested for ammonia and nitrite at 0.
4. Keep the water stable and well-oxygenated.

What to avoid

• Untreated tap water can contain chlorine or chloramine, which are harmful to fish.

• Distilled water lacks essential minerals goldfish need.

• Salt water is not suitable for goldfish.

Best simple answer

If you want the safest, easiest option: use regular tap water that has been treated with an aquarium water conditioner.

Meta description: The best water for goldfish is dechlorinated tap water with stable, freshwater parameters and proper mineral content.

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TL;DR: Use dechlorinated tap water, keep it freshwater and stable, and avoid untreated tap, distilled, or salt water.

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