Maybe soaking the new filter is the answer. I change the filter every month and clean the unit thoroughly (dismantle the whole thing) every other day.

Yes, I know charcoal is harmless, but I still don't like the LOOK of it in my boys' water. And, I'll try leaving it alone instead of fooling with it.

You're right, I did notice that the covering is a little different than when we first started buying them.

Thanks, everyone, for your input!

I'll let you know how it works!