The experimental mat has been out for about a week now, but extremely high winds during a storm last night pulled up a corner of the mat spilling out the contents.
Luckily the majority of the plants were able to be saved, so we have one empty spot now.
I added some weights to the four corners to hopefully prevent this from happening again.
This is why we're experimenting! Learning what works and what doesn't with the setup.
Yes, this type of foam is used for docks, boats, sports, and more importantly... this is what the original papers used. All of the parts are rated for water, temperature, and UV resistance.