The light requirements make this plant an attractive choice for lower light homes, but please note: These plants do poorly in direct sun, which can bleach the leaves. Place your prayer plant in a part of a room that receives low to bright indirect light.
Like all houseplants, calathea enjoy filtered or dechlorinated water, and can be a little more demanding than other houseplants. Simply fill your watering can and leave it overnight to dissipate the chlorine. If there are other chemicals in your tap water, try using filtered or distilled water instead.