I ordered some ....not sure if it was from this place you mentioned. I didn't check it right away... ....and it had spots where it would NOT hold water.
The material is a product called Duraskrim. I use the 20 mil stuff.


Quote Originally Posted by ArtfulDodger
Second question: Is the raft system better than flood?
It's 'best' to use both...have your water go to the media beds first, to filter out the solids, then to the rafts.
The rafts are great for lettuces, ect. The media is great for bigger stuff, like peppers and tomatoes.