A Monstera loves a lot of bright indirect light, but can tolerate low-light situations.
Direct light could burn the leaves and too little light could make the leaves turn yellow.
You should water a Monstera when the soil is dry at the top.
Don't let the soil dry out too much, because this could result in brown and crispy edges on the leaves.
You should use well-draining soil for your Monstera.
The soil should retain a little bit of moisture, but not so much that the soil is wet.
You should repot a Monstera about every two years.
This is when the roots have taken up all the space in the pot and it needs more space to keep growing.
If you don't want it to grow any further, you can also stop repotting the plant.
You should fertilize your Monstera once per month in the growing period (spring and summer.
In its dormancy period, the fall and winter, you shouldn't fertilize the Monstera at all.
The Monstera is a very tough plant when it's healthy.
When it's stressed or in shock it could become vulnerable to scale, mealybugs, and spider mites.
The monstera is toxic to humans and pets.
When the sap is ingested it could cause indigestion and vomiting.
The old leaves are dropping because the plant needs to preserve nutrients to help new leaves grow big and strong.
This is normal behaviour for this plant and there is no need to worry.
When the tips of your Monstera leaves are turning yellow, brown, or black, it's a clear sign that the plant has been overwatered.
The best thing to do is stop watering, drain the excess water, and let the soil dry out before watering again.