It's open area within the closet
Enhancing plant growth using negative ions
says it helps plants possibly?

im looking at something like

The3Q-3Q Ionic Air Purifier

Produces negative Ions to stabilize air?
Revanche21 Reviewed by Revanche21 on . Odor Control in an Apartment Using those Ionizer things? you know those towers that supposedly make it allergen free and deodorizes? would one of those towers be appropriate in a small closet in terms of controlling odor for 4-8 plants? no worries about heat etc just smell ps: does the 'ionized' air affect plants? Rating: 5