The Chem-Tainer 1000 gallon open top batch storage tank (SKU TC6672AA) is a cylindrical open top polyethylene tank built for batch storage and bulk water storage where you need full top access. It holds 1000 gallons in a 66-inch diameter base and stands 72 inches tall, putting roughly 30.25 square feet of floor under a full 1000 gallon volume while clearing a standard 6-foot doorway and ceiling check. It is molded in natural white polyethylene, the open top tank format buyers search for when they need to drop hoses, mix, or add product by hand.
Will it work for your job?
This tank carries an unusually high 2.0 specific gravity rating, which is the real buy reason: the wall is built to carry contents up to twice the weight of water. Filled with plain water it holds roughly 8,340 lb of contents; at the full 2.0 SG ceiling those contents can reach about 16,680 lb. That headroom means this same footprint handles dense slurries, brines, and heavy batch chemistries up to 2.0 SG, so you are not re-buying the tank when your contents get heavier. Plain water only needs about 1.0 SG, so you are buying 2x the density capability up front. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm this 1000 gallon size matches your throughput before you commit to freight.
Site, pad, and fittings
Because this is an open top tank, the rim is the working surface for your hose drops and manual additions. Set it on a flat, continuous, load-rated foundation sized to the full 66 x 66 inch footprint so the load stays evenly distributed; our guide on concrete pad sizing for above-ground polyethylene tanks walks through the ACI framework for getting that base right. As an open top batch tank, this unit ships without molded fittings or bulkhead penetrations by default — plumbing, gaskets, and bulkhead fittings are added to suit your install. Check the technical drawing on this page for the tank's dimensions, then call us to spec the fitting and gasket package for your plumbing rather than assuming inlets are pre-molded.
Where this tank fits — and where it does not
At 1000 gallons, this is a credible open-top reserve volume for rural and remote water programs; our fire-water reservoir tank design guide covers NFPA 22 sizing discipline for that role. For larger water programs, the industrial water reuse tank topology guide shows how open top storage tanks slot into grey-water, rainwater, and condensate aggregation trains. The honest contrast: an open top tank gives you full top access but no drain advantage, so if you need complete drainage or solids handling, read the cone-bottom 30° vs 45° drainage comparison before defaulting to flat-bottom open top.
This tank ships LTL freight, quoted live to your ZIP. Because Chem-Tainer stocks it at both Hanford, CA and Hummelstown, PA, West-Coast and East-Coast buyers each draw from a regional origin — a concrete freight advantage you can verify yourself against a real number from the Freight Cost Estimator. For help spec'ing your batch storage setup or the right fitting package, call us at 866-418-1777.
