That's right, and you can use any combination of soil you like! Try a mixture of orchard bark, coir, perlite, worm castings, and charcoal.
did you know about Calathea anulque care?
This plant is easy to care for. It likes indirect sunlight. You should check the soil on this plant often. If it starts to dry out, water it immediately. This plant likes high humidity, around 60% and 70%. If below that, the plant begins to turn yellow on its leaves. This plant can survive at temperatures around 65°F to 80°F and likes liquid fertilizer.