The Enduraplas 1000 Gallon Yellow Horizontal Sump Bottom Leg Tank is a 1000-gallon polyethylene leg tank that ships with a support frame and carries a 1.9 specific-gravity rating, which is the spec that lets it haul dense agricultural and industrial liquids most polyethylene tanks cannot. It measures 94 inches long, 60 inches wide, and 71 inches tall, sitting on a 60.0 x 94.0-inch footprint. The sump bottom gives the tank a low drain point so liquid drains down rather than pooling across a flat floor, and the frame keeps it stable on a skid or stationary stand. This is the kind of horizontal leg tank buyers search for as a 1000 gallon horizontal leg tank for fertilizer hauling and blend-station duty.
Will this horizontal leg tank work for my load?
Anchor your decision on the 1.9 SG rating. Filled with plain water at 8.34 lb/gal, a full 1000 gallons weighs about 8,340 pounds. Because the tank is rated to 1.9 specific gravity, its maximum rated contents weight is 15,846 pounds, the ceiling for heavier liquids such as concentrated fertilizers and acids. That 15,846-pound figure is contents only; the weight of the tank and frame is additional and not listed here, so confirm it by phone before you size a trailer or skid against it. Stay at or below the rated contents weight and verify your liquid's specific gravity before you fill. The horizontal leg-tank geometry keeps the center of gravity low and the frame adds stability, which is why this style suits transport skids and stationary blend setups. Run your volume and weight through the Tank Sizing Calculator, and if you are deciding between sizes, the Tank Sizing Guide walks through the math.
Chemical compatibility
This is a molded polyethylene tank rated to 1.9 specific gravity. The resin is reported as HDLPE but flagged unconfirmed, so confirming HDLPE versus XLPE with us is a prerequisite before any chemical service, not optional fine print, because the two resins behave differently with aggressive media. Chemical resistance also depends on your fittings and gaskets, not just the tank wall. Several media on the list below require upgraded materials and will fail with the default EPDM gasket and PVC fitting: sulfuric acid 98% needs CPVC fittings, the acids and oxidizers (hydrochloric, hydrofluoric, hydrofluosilicic, phosphoric, hydrogen peroxide, sodium hypochlorite) need Viton gaskets, DEF and peracetic acid need 316SS fittings, and peracetic acid uniquely needs Aflas gaskets. Drawing from the OEM chemical-resistance chart, which is concentration- and temperature-specific, this tank handles the following at the concentrations shown, paired with the fitting and gasket materials noted:
- Acetic Acid 60% — PP/PVC fittings, EPDM gaskets
- Aluminum Sulfate 50% — PVC fittings, EPDM gaskets
- Calcium Chloride 40% — PVC fittings, EPDM gaskets
- DEF 32.5% — 316SS fittings, EPDM gaskets
- Ethylene Glycol 100% — PVC fittings, EPDM gaskets
- Ferric Chloride 50% — PVC fittings, EPDM gaskets
- Ferric Sulfate 60% — PVC fittings, EPDM gaskets
- Ferrous Sulfate 20% — PVC fittings, EPDM gaskets
- Hydrochloric Acid 37% — PVC fittings, Viton gaskets
- Hydrofluoric Acid 48% — PP/PVC fittings, Viton gaskets
- Hydrofluosilicic Acid 26% — PP/PVC fittings, Viton gaskets
- Hydrogen Peroxide 50% — PVC fittings, Viton gaskets
- Magnesium Chloride 30% — PVC fittings, EPDM gaskets
- Peracetic Acid 30% — 316SS fittings, Aflas gaskets
- Phosphoric Acid 85% — PVC fittings, Viton gaskets
- Polyaluminum Chloride — PVC fittings, EPDM gaskets
- Potassium Carbonate 50% — PVC fittings, EPDM gaskets
- Potassium Hydroxide saturated — PVC fittings, EPDM gaskets
- Propylene Glycol — PP/316SS fittings, EPDM gaskets
- Sodium Bisulfate — PVC/PP fittings, EPDM gaskets
- Sodium Bisulfite — PVC/PP fittings, EPDM gaskets
- Sodium Carbonate 30% — PVC fittings, EPDM gaskets
- Sodium Hypochlorite under 16.5% — PVC fittings, Viton gaskets
- Sodium Thiosulfate 40% — PVC fittings, EPDM gaskets
- Sulfuric Acid 98% — CPVC fittings, Viton gaskets
- Urea Solution 50% — PP/PVC fittings, EPDM gaskets
- Zinc Orthophosphate — PP/316SS fittings, EPDM gaskets
- Ozonated Water up to 10 PPM — PVC fittings, EPDM gaskets
Always match your fitting and gasket materials to your specific chemical, and verify against the OEM chart at your actual concentration and operating temperature. See the full chemical compatibility reference for more detail.
The mistake to avoid
The most expensive error on a tank like this is filling it without checking the specific gravity of your contents. The 1.9 SG rating means the tank wall is engineered for liquids up to 1.9 times the density of water, but it does not raise the weight limit: a full 1000 gallons of a 1.9-SG liquid hits the 15,846-pound contents maximum. Pairing a heavy load with the wrong fitting or gasket is how a leg tank fails in service, so grab a standard PVC bulkhead for sulfuric or hypochlorite and you have already built the leak. Match the fitting and gasket from the list above to your media, confirm the resin grade for chemical use, and never assume a leg tank rated for water is rated for your chemical. For DOT and trailer-use considerations on leg and applicator tanks, the Norwesco applicator and leg tank guide and the 49 CFR 173.5 farm-fleet classification guide cover the rules, and the fertilizer blend stratification guide explains how to keep dense blends from salting out.
This tank ships LTL freight from the Enduraplas plant in Neche, North Dakota, with freight quoted live to your ZIP. Get your exact number with the Freight Cost Estimator, or call 866-418-1777 to confirm specifications, resin grade, tank-plus-frame weight, and your delivered freight before you order.
