Calatheas are unique and can be considered tricky indoor houseplants that come in a lot of different shapes, sizes, and colors. They are also pet friendly and considered non-toxic to dogs and cats.
Lighting: This is considered a low light tolerant plant but it does appreciate bright indirect light. It can tolerate around 1-2 hours of direct light touching the foliage. To maintain the plant's size, a minimum of 200 FC is required. To achieve good growth, you will want to look for 400 FC.
Watering: This plant likes to stay evenly moist between waterings. That doesn't mean to constantly drench it, but that you want to let the top 1-2" dry out of the soil before watering it again. These plants have been known to easily get brown crispy tips on the foliage. This can be a sign of lack of humidity or the type of water you are using. It is known that they prefer distilled water instead of tap. If you don't want to buy distilled, you can fill a watering can and let it sit for 24 hours or more which can help remove chlorine or other chemicals in tap water.
This quick cheat sheet is meant to give you tips and tricks for how to best care for your plant. All of the information above is based on my personal experience and advice with houseplants and the lighting requirements are a reference from Daryl Chang of House Plant Journal.
*FC is lighting measured in Foot Candles and requires a light meter to get an accurate reading.