My neighbor had a friend that had some black barrels I could have. He needed to pick up some pallets. So we used my 16’ trailer and I was able to get 16 black plastic for free.
I have been paying $10 each for them so this helped out.
Here is a picture of how the barrels will be stacked on the back wall in the greenhouse with water in them.
The front stands are 4’ but the front grow beds are going to be 3’ x 20’ so I cut a foot off the stand and welded it back together. I just got a Hobart 140 mig welder so this will give me a lot of practice welding.
Hopefully I will be a better welder when I and done with this project.