The Enduraplas 1000 Gallon White Horizontal Sump Bottom Leg Tank (SKU THD01000W) is a 1000-gallon natural white polyethylene horizontal leg tank built for transport and applicator work where the load rides on a trailer or skid. It carries a 1.9 specific gravity rating, and that one number is the reason this tank exists: at 1.9 SG the wall is qualified to carry liquids up to roughly 1.9 times the density of water, so it handles dense fertilizer blends and heavy acids without the wall fatigue you get when a 1.0 or 1.1 SG tank is pushed into the same service. Filled with water it holds 8,340 lb; filled to its 1.9 SG ceiling it is rated for up to 15,846 lb of contents - and 15,846 divided by 8,340 lands right at 1.9, so those two numbers are the same limit stated two ways, not two separate specs. The horizontal body sits on a molded sump bottom so contents drain toward the low point for cleaner emptying.
Will it work for your load?
Dimensions are 94 in long by 60 in wide by 70 in tall, giving a 60.0 x 94.0 in footprint to plan your trailer deck or containment pad around. Size the chassis off contents weight, not gallons: 15,846 lb is contents alone, before you add the tank's own weight and the trailer, so a fully loaded heavy blend on this tank needs the axle, brake, and tire ratings planned in advance. Run your actual liquid against that 15,846 lb rating - a dense product can hit the ceiling well before the tank looks full, while plain water tops out at 8,340 lb. The Tank Sizing Calculator and Tank Sizing Guide walk you through matching gallons and product density to a tank and a trailer. For the road-use side of running a 1000 gallon horizontal leg tank, the guides on applicator and leg tanks for fertilizer and the agricultural exemption and DOT classification for farm-fleet use cover the non-roadable trailer scope and farm-fleet rules. If you are blending nutrients, read up on fertilizer-blend tank stratification so a layered tank does not send the spreader off-spec. Refer to the technical drawing on this page for fitting and outlet placement.
Chemical compatibility
The 1.9 SG rating is what unlocks the heavy chemistries other tanks can't carry: Sulfuric Acid at 98% (use CPVC fittings and Viton gaskets) and Ferric Chloride at 50% (PVC, EPDM) are exactly the kind of dense, aggressive liquids a 1.9-rated tank is built around. One gating step before any chemical service: the resin family is listed as HDLPE but flagged for confirmation - confirm HDLPE versus XLPE with us first, because crosslinked and linear polyethylene behave differently against aggressive chemistries, and the difference matters most on the strong acids and oxidizers below. Per the OEM chemical-resistance chart (always concentration- and temperature-specific), this tank handles a broad range at the listed concentrations, each with its required fitting and gasket materials: Acetic Acid 60% (PP/PVC, EPDM), Aluminum Sulfate 50% (PVC, EPDM), Calcium Chloride 40% (PVC, EPDM), DEF 32.5% (316SS, EPDM), Ethylene Glycol 100% (PVC, EPDM), Ferric Chloride 50% (PVC, EPDM), Ferric Sulfate 60% (PVC, EPDM), Ferrous Sulfate 20% (PVC, EPDM), Hydrochloric Acid 37% (PVC, Viton), Hydrofluoric Acid 48% (PP/PVC, Viton), Hydrofluosilicic Acid 26% (PP/PVC, Viton), Hydrogen Peroxide 50% (PVC, Viton), Magnesium Chloride 30% (PVC, EPDM), Peracetic Acid 30% (316SS, Aflas), Phosphoric Acid 85% (PVC, Viton), Polyaluminum Chloride (PVC, EPDM), Potassium Carbonate 50% (PVC, EPDM), Potassium Hydroxide saturated (PVC, EPDM), Propylene Glycol (PP/316SS, EPDM), Sodium Bisulfate (PVC/PP, EPDM), Sodium Bisulfite (PVC/PP, EPDM), Sodium Carbonate 30% (PVC, EPDM), Sodium Hypochlorite under 16.5% (PVC, Viton), Sodium Thiosulfate 40% (PVC, EPDM), Sulfuric Acid 98% (CPVC, Viton), Urea Solution 50% (PP/PVC, EPDM), Zinc Orthophosphate (PP/316SS, EPDM), and Ozonated Water up to 10 PPM (PVC, EPDM). The most expensive mistake on a tank like this is mismatched gaskets: the strong oxidizers and acids - Sodium Hypochlorite, Hydrogen Peroxide 50%, Sulfuric Acid 98%, Hydrochloric Acid, Hydrofluoric Acid, Phosphoric Acid - all require Viton, while the salts, glycols, and DEF run on EPDM. Drop EPDM where the chart calls for Viton and the gasket fails. Verify your specific chemical, concentration, and temperature on the full chemical compatibility reference; deep pages exist for Sulfuric Acid, Sodium Hypochlorite, DEF, Hydrochloric Acid, and Phosphoric Acid, among the others above.
Freight
This tank ships LTL freight from the Enduraplas plant in Neche, ND, quoted live to your ZIP code - it is a haul-class tank, so plan for a freight carrier rather than parcel. Get an exact number with the Freight Cost Estimator, or call us at 866-418-1777 and we will quote the freight to your delivery point and confirm the resin family and fitting package for your liquid before you order.
