rather than sealed containers, I’d use something perforated (such as orchids pots) to allow currents through the potting mediumpotted in some drinking glasses
Given the surface current, I’d add some fast growing stem plants at tank startup rather than floaters ...
Micranthemum umbrosum and Heteranthera zosterifolia are a couple of my favourites, both seem happy if just anchored in some sand or stashed between hardscape as long as water column fertilization (& CO2)