When do you replant or move Anthurium to another pot?
Repot Anthurium when you have to water it two to 3 times a week. They bloom better when potbound though. Don't overpot, they don't like soppy, soggy feet. A good rule of thumb is that the container should be 1/3 to 1/2 the mass of the plant. This article might help: https://www.gardeningknowhow.com/houseplants/anthurium/anthurium-care.htm