Water Parameters: The Key to Health

Getting the water right is everything. Gold Dust Mollies are freshwater fish, but they have a unique tolerance for slightly brackish (salty) water due to their coastal origins. While not necessary, a small amount of aquarium salt can sometimes help with disease prevention.

• Temperature: 72-82°F (22-28°C) is the sweet spot. Keep it stable!
• pH Level: They prefer slightly alkaline water, between 7.5 and 8.5.
• Water Hardness (GH): 15-30 dGH. They thrive in hard water.
• Ammonia, Nitrite, Nitrate: Always keep ammonia and nitrite at 0 ppm. Keep nitrates below 40 ppm (ideally under 20 ppm) with regular water changes.

A reliable heater and a good filter are non-negotiable. A hang-on-back (HOB) or canister filter rated for your tank size will do a fantastic job of keeping the water clean and oxygenated.

Substrate, Plants, and Decorations

This is the fun part—decorating! A darker substrate, like black sand or fine gravel, will make your Gold Dust Molly’s colors pop beautifully. They are not picky, so choose what you find most aesthetically pleasing.

Mollies love a planted tank! Live plants not only look great but also help maintain water quality and provide hiding spots for adults and fry. Here are some excellent, easy-to-grow options:

• Java Fern
• Anubias
• Hornwort
• Guppy Grass
• Java Moss