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Is it safe to grow vegetables in PVC pipes?

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Like with aquaponics, PVC is safe to use in gardening when it is food safe (uPVC). It can safely be used for water lines as well as for growing food directly in large diameter pipes.
Craig Witthaus is an artist in White Bear Lake, Minnesota. He has been sailing since he was five years old, and his sailing experience shows in the authentic design of the boats and hydroponics and “set” of the sails in his work. He has settled on oil painting as his primary medium, with a focus on landscapes, gardens and sailing themes. Also we have answers about gardening and hydroponic systems.
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