I have in ground and container bogs and enjoy them greatly, I could post some pictures but as it’s early spring there’s nothing to see really as yet, but will later in the season.
Things I would change would be, in one of the bogs, when replacing the media I reduced the bog depth to 12”, to reduce the cost of the medium required, but of course this reduced the mass and volume of the bog and it tends to dry out rather quicker than I would like and it also fills with water and is saturated much quicker in prolonged rain periods. As I have a bung in the bottom of it I can drain it if it gets inundated for too long and take it out completely for winter, but if I go away, I have to trust to luck that it doesn’t get too dry or wet.
Cheers
Steve