Two years ago, we organized a water tank group buy and received a good response. I’ve now organized another water tank group buy.
These are new (unused) food-grade plastic bladders housed in new/used metal cages. 285 gallons! And it stores in a lot less space than you’d think. While I’m aware of others having stacked their tanks three high, due to space constraints (and a lack of a death wish) ours are stored two high. I’ve now had mine stored in the garage for three years without any incident; I rotate one tank every six months.