Used 6000 gallon R.L. Industries vertical Derakane tank. Liner: .090 ECTFC (Halar) Built 1993. Specific gravity 1.835. Flat bottom, dome top. Structural resin: Derakane 411-350 PA. 24" side bottom manway. (1) 3" side bottom drain. Various fittings op top. Approximately 8' 6" diameter x 12' high straight side.