phytomike, great link! And welcome to the crazy forum.
2 to 4 feet is indeed a too dense of a design, increasing ill-buoyanced biomass, which will sink the entire island, unless more floatation methods added, which decimate the idea of the natural floating island perspective. Little soil is required for ionic bonding between plant rooting system and bio-matters to create that unique environment for the plants, also in promoting proper uncompressible gaps for drainage once the root systems are full in play. Without restrictive uncompressible gaps, the roots will be too dense, causing ill drainage, and thus, rotting. This is macrobiological study intermediate course in the bioremediation courses. This is where my green thumbs for using natural approach to enhance my garden, as well as my vermicomposting friends.
Keep your thoughts and opinions voiced. They will bring fresh unique perspectives to the group. Creating the most natural, least costly, and most durable island that can be regenerative is the solution that we all want. Now, finding that approach..well..time to pull out all the inventive and creative minds we can, and mesh them all together.
