Hi, I just signed up because I was looking for remedies for Allergies and Ears, and saw your concerned post. I'm actually a 20 year old male, and I've had ear complications all my life. I recently got a new ear drum put in beginning of February because I failed my hearing test for the Police Department (and my 2nd and last chance is coming up Thursday).
The reason I'm posting is because I had all these problems when I was younger, and went through a lot of hell because of it (to say the least). As far as your child is concerned with the loss of hearing and fluid build-up, tubes are definitely a good thing to go for. But you must be CAREFUL. I had 5 sets of tubes when I was younger, and it made two big holes in my ear drums. My left ear closed up (and I have close to normal hearing), and my right one had a large hole in it (80% gone) which made me practically legally deaf in that ear (hence my surgery on it to reconstruct my eardrum). Luckily that surgery went better than planned, and they closed the hole in one shot. But never use Q-Tips in your ears. It only causes more problems, your ears naturally move out all the wax in your ears, using a Q-Tip only compacts the wax in there against your ear drum making your hearing worse, not better.
So if there is a hole in there, I'd keep a close check on it just in case. If there is a hole and water gets past the middle ear into the inner, it can cause severe complications. Which may include definite hearing loss or chronic ringing of the ears (since the water will affect the hairs in your inner ear which makes them always on the "on" position). It's definitely not something you want for your child, since it effects everything in their lives from social (hearing everyone else), education (hearing things in school), and safety (hearing things that may be dangerous).
I regret that my mother didn't get my ear drum fixed when I was younger because she said I was "too little." Go with what the E.N.T. Specialists suggest over all. Also I had a cleft palate (hole in my palate that let air pass through and distort the air flow and make a suction in my ears causing loss of hearing).
I would suggest if you haven't already check if your child has any deformity in his throat that may be causing the distortion of the hearing (or for anyone else that may have concerns for their child's hearing).
They also make nasal sprays to open up the canals of your ears to increase hearing as well. That's another thing you should consult your specialist about. I say specialist because your average doctor will never know as much as specialist do.
Any other questions just PM me and I'll do my best to answer back. Good luck to you all!