Post a pic and maybe we can help ID the plants....you don't want to disrupt roots and usually its not recommended to do a deep vacuum around the roots anyway....the mulm/debris byproduct as it decomps will be used by the plants as a food source....
You can do a slight stir and dip method to bring some of the mulm/debris up into the water column then dip out half the water with your water changes to get excess mulm/debris...It should settle within an hour....if not you are either overfeeding or missed a water change....you may have to brush any settling debris off plant leaves too once it settles to help make the tank look tidy...
Depending on the number, species and growth state of the plants they can assist with maintaining water quality by function as filtration.....
But need to know plant species, number, stocking, lights, age of bulb, kelvin, watts, photoperiod....