Don't sweat it. It isn't an issue.

I usually try to squirt my ferts into the jet stream from my filters, just for good measure. If you have good enough water movement for a healthy tank you have good enough water movement to adequately distribute your ferts.

I've never noticed improved growth in the areas that I use to dose ferts. They don't stay in one place for very long. Even in a nano with no filter or pump, when dosing iron (dark color), the cloud quickly breaks up and disappears.

It's always nice to have one more thing not to worry about.