Plastic material for DIY reservoir?

[ChenBenTz]

I'd like to construct a custom reservoir but I'm not sure which material to create the inner lining from. I'm referring to the plastic that is used in a Flexitank.

Input is appreciated.

 

[Mikell]

HDPE is a standard inert container plastic. Food grade to boot.

What do you mean by Flexitank and liner? Quick google shows a rain barrel and a bladder system for shipping containers.

 

[ChenBenTz]

Yeah, that's what I'm looking for. Something like this.

Except the only place I found it was Alibaba, so I figured I could just make my own.

 

[AgentPothead]

I remember seeing a bunch of things like this at farms, only larger. Like huge bags of water almost, I'm pretty sure those were polyethylene like Mikell said. If you are going the alibaba route look for polyethylene fish tanks, those might be cheaper than something for "farming".