Used fiberglass salt water tanks, I have 1 left, You could cut down to make stock water tanks. Or bury in the ground to gain some ground heat to help prevent freezing. Other uses are use for a nurse tank in field for water for sprayer, raise fish water storage for fire protection or coat inside and use for swimming pool.
I have been selling them to make shelter for sheep and goats.
I think they are 8,000 gallon capacity
Tanks are 5' tall and 16' in Dia. Can be split in half for hauling. I can load in one piece on your truck, or deliver if not too far for a fee.