How Long Does the Filtration Take?
Timelines are controlled by many factors. Environmental conditions, nutrient availability, plant species, length of the effective growing season and severity of the contamination all play a part in determining how long it takes for phyto-remediation to occur. Generally the better the growing conditions and the more aggressive the plant the faster uptake will occur.
Animal Protection Features
The floating island system can have additional features added to it such as coated grating over the top to prevent animals from eating plants down to the ground or digging up the root systems. Additionally other fencing systems can be attached to the hard frame to prevent ducks and geese from using the platforms for nesting. One final feature is that in some cases the growing medium can be kept in the water and so they do not even provide suitable nesting locations for most birds.