An established minimum 10 to 20 gallon aquarium is ideal for a group of Gold Powder mollies, or mollies in general. Sizing up may be needed if you intend to have a large group for breeding purposes. While Gold dust mollies are relatively hardy and easy to care for, they would do best introduced into a biologically mature aquarium. Certain mollies can be sensitive to water parameters given the extent of selective breeding over decades, but generally speaking mollies will not do well in soft water or at an acidic pH level. If kept in these conditions, mollies will shimmy and exhibit clamped fins as they decline in health. The aquarium does not need to be aquascaped with anything in particular, but mollies do appreciate live plants and floating plant material. Gold dust mollies can be mixed with a wide variety of community type fishes that thrive in similar water parameters. Different ornamental strains of mollies can be mixed with no issue, but be aware that the “quality” of their offspring and subsequent generations will be decreased from mixing two, or more, very different gene pools. Serious molly breeders often stick to a single color strain to ensure that the genetic integrity of that type is maintained. Recommended water conditions, 72-82° F, KH 15-30, pH 7.0-8.5.