Philosophos

Even with topoff water?

Lets eliminate some variables then. Take some water run through a filter in a clear container; even use a britta water filter, or some RO water. From there, dump some tap water in and see what happens.

The water here looks cloudy and actually foams when you pour it depend on which water system you use. It may just be a matter of what's already in the tap water.

Either way, a canister with a layer of fine filtration should help.

-Philosophos