Is Salt Useful? Yes, salt can help fish in poor health. ... “If water changes are large enough and frequent enough, and if all the water is well aerated and circulated, livebearers (all the species I have kept) do fine without salt added to the water.

Do guppies need salt?

Move your guppies to a brackish tank. Guppies do well in freshwater aquariums, but their natural habitat is brackish water. Brackish water is part fresh and part salt, naturally found in swamps and estuaries, and easy to recreate at home for your guppies.

Is aquarium salt necessary?

AQUARIUM SALT promotes fish health by improving gill function, making it easier for fish to breathe. It also provides essential electrolytes that fish need to reach peak coloration and vitality. These electrolytes may be lost each time you perform a partial water change, and will need to be replenished.