Managing Mineral Buildup in a Large Minibog (Kiddie Pool)

Likely Causes

Mineral buildup from evaporation (no drainage) and/or anaerobic decay in waterlogged lower media. Sand from pine savannah may contribute alkalinity/salts.

Fixes

1. Drill 1/4-height holes around pool sides—creates bottom reservoir but aerates upper root zone.
2. Flush thoroughly several times with RO water.
3. Monitor plant response.

Long-Term

Large soil volume retains water well; occasional flushing and aeration holes prevent toxic buildup.