V.W.
What exactly do you mean...
ear wax or drainage from the tubes?
My son's ears (takes after his dad) produce a lot a of ear wax. When his allergies are flaring up or he gets a cold, the amount of ear wax becomes profuse. It is softer than normal also. If it is just WAX then it is probably related to some sort of immune response. If it is NOT WAX but some sort of drainage, then he needs to see the doctor. A perforated eardrum needs to be treated. If you cannot tell for sure which it is, then he needs to be seen to rule out an infection or perforated eardrum.