With a setup like that you'll be spot-cleaning substrate and washing any décor as needed.
For a full clean and sanitize, I would remove all of the décor, then use a small sturdy plastic shovel to remove the substrate and put it in a plastic tub. Wipe out any remaining substrate with damp paper towels.
Spray the interior well with F10SC, wipe it out, spray it again lightly with F10SC, then replace the substrate, décor, and snake.