Twin grow beds. We had to construct them to hold a lot of weight. One grow bed filled with gravel and water will weigh 4366 lbs. According to my calculations. Grow beds are 17' long x 2'-6" wide and 1' deep.
Well the liner is kind of temporary. I could not afford to buy pond liner at this time. I used a new tarp and plastic visqueen over that. If I can get one year out of it I will be happy. I just did not want to miss my growing season. I used pea gravel for my growing media.
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