In DIY hydroponic systems, PP isn’t at all uncommon to find. That catch is, producing the plastic causes a dangerous chemical process which is the very reason it is so safe to use once it’s manufactured. Polypropylene, also known as PP, or plastic number 5, is often considered one of the safer plastics to utilize in hydroponics. It is a safe and suitable material to use in hydroponics. It is also highly resistant to regular wear-and-tear commonly caused to plastics by chemicals. It is an eco-friendly type of plastic that is easier to recycle than other plastics. High-Density Polyethylene, or plastic number 2, is also known as HDPE. Like normal PVC, CPVC is often used for the water pipes and grow sites in hydroponic systems. It’s worthy of mentioning here as it is markedly different than basic PVC.ĬPVC is a chlorinated version of PVC and therefore tolerates fluctuating temperatures, chemical vapors, and pressure better. CPVCĬhlorinated Polyvinyl Chloride, also known as CPVC, is another version of PVC. It is often chosen as a material for hydroponics because it’s strong and long-lasting. So long as the PVC is BPA-free, the material is perfectly safe for use in growing systems. Our list begins with one of the most popular plastics used in hydroponics, especially for pipes and grow sites: Polyvinyl Chloride, also known as PVC. In the following sections, we break down each type of plastic that’s safe and commonly found in hydroponics. There are several types of plastics that are safe for hydroponics, and depending on your system it may contain one or more of them. A Final Word About Hydroponics and Plastics.Are There Alternatives to Plastic for Hydroponics?.Do Hydroponic Buckets Need To Be Food Grade?.Can You Use Recycled Plastics for Hydroponics?. Can You Use Old Food Containers for Hydroponics?.Avoid Using These Plastics With Hydroponics.These Plastics Are Safe for Hydroponics.
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