Mist is something of a blessing, which is why it's so desirable, more co2 is available to the plants with mist. If you find it too distracting then having it on the inlet side of the filter can solve this but it can lead to the co2 collecting in the filter and creating an airlock, some manufacturers consider it a voiding of warranty too as it wears out o rings and seals more quickly. The other thing would be to swap back to a intank diffuser which will produce a much mist with larger bubbles and in a smaller amount, you will end up using more co2. Or you could use a true reactor, the type with a chamber but these are expensive and will strangle off the flow.
Ultimately, mist is good but if you really want to get rid, then it's which trade off you're most comfortable with.