What plastics to avoid in greenhouse:
PVC. Did I just say that right? Yep. A lot of DIY hydroponics use PVC pipes to store and run their hydroponic solutions, and even grow their plants. In it’s rigid form PVC is probably safe, however in its flexible it could be dangerous. To make it soft a plasticiser is added, often up to 40%! According to Choice Australia recent studies have raised concerns about the health risks.
Doesn't pvc get brittle with to much sunlightSo all PVC is not automatically safe. Right kind of PVC used properly would likely be safe
Doesn't pvc get brittle with to much sunlight
This has worked for me and I’m on year 8 with the same PVCuseing white pvc and covering the lengths used with polly tunnel heat tape will make them last for years
find the white foam tape they lay across the metal to protect the plastic covering