Like many livebearers, guppies enjoy pH levels at 7.0 or greater. They also like hard water with good amounts of calcium, magnesium, and other essential minerals. ... However, if your water is naturally soft, add Wonder Shell to your aquarium, and it will help raise your water hardness and add minerals to the tank.

Can guppies survive in soft water?

Both guppies and swordtails need hard water, although guppies are more forgiving than swordtails for the hardness. However your water is very soft which wont help either species long term.

What hardness of water do guppies like?

Guppies prefer close-to-normal pH levels. The ideal pH level for a guppy ranges from 6.8 to 7.8, the value found in their natural habitat. The ideal water hardness for guppies is dGH 8-12. The correlation between water hardness and pH is very important.