The Enduraplas 2500 Gallon Black Horizontal Sump Bottom Leg Tank ships with its integrated steel frame and a sloped sump bottom that drains toward a low point, which is why it sits in our haul and applicator lineup rather than the stationary storage racks. The black polyethylene shell holds 2,500 gallons, stands 78 inches tall, and lays out to an 87 x 130 inch footprint, so plan the pad and tie-down points around that 87.0 x 130.0 layout before delivery. It carries a 1.9 specific gravity rating, the number that decides whether this tank can legally carry your fluid.
Will it work for your job
Empty-to-full water weight runs to 20,850 pounds, and the tank is rated to carry contents up to 39,615 pounds. That second number is the real ceiling: it already accounts for the 1.9 specific gravity rating, so a dense fertilizer blend or acid load is what the 1.9 rating exists for, not plain water. Size the load against weight, not just gallons - a tank can sit well under 2,500 gallons by volume and still be at its weight limit with a heavy product. Run your fluid and target volume through the Tank Sizing Calculator and the Tank Sizing Guide so the loaded weight stays inside that 39,615-pound rating, and confirm your truck or trailer frame is matched to it. Buyers cross-shopping this as an Enduraplas horizontal leg tank land here when they need a high-SG horizontal that hauls.
Chemical compatibility
This is a high-strength tank: black polyethylene with a 1.9 specific gravity rating, built for dense and aggressive liquids. The resin is recorded as HDLPE but is not yet confirmed - confirm HDLPE versus XLPE with us before putting it into chemical service, because crosslinked and linear polyethylene behave differently against some chemicals. Compatibility below is per the OEM chemical-resistance chart and is concentration- and temperature-specific; match the listed fitting and gasket materials and verify your exact concentration and operating temperature before committing. At the listed strengths, this tank handles acetic acid (60%, PP/PVC fittings, EPDM gaskets), aluminum sulfate (50%, PVC, EPDM), calcium chloride (40%, PVC, EPDM), ethylene glycol (100%, PVC, EPDM) and propylene glycol (PP/316SS, EPDM), ferric chloride (50%), ferric sulfate (60%), ferrous sulfate (20%), magnesium chloride (30%), sodium carbonate (30%), sodium thiosulfate (40%) and potassium carbonate (50%), all with PVC fittings and EPDM gaskets. It also handles hydrochloric acid (37%), hydrofluoric acid (48%), hydrofluosilicic acid (26%), hydrogen peroxide (50%), phosphoric acid (85%) and sodium hypochlorite (under 16.5%) on Viton gaskets. Three loads need hardware you must source separately and should confirm before you order: sulfuric acid (98%) requires CPVC with Viton, peracetic acid (30%) requires 316SS stainless with Aflas gaskets, and DEF (32.5%) requires 316SS stainless - not the PVC used for most chemicals here - on EPDM. Saturated potassium hydroxide (PVC/EPDM), polyaluminum chloride, sodium bisulfate, sodium bisulfite, zinc orthophosphate, and ozonated water (up to 10 PPM) round out the list. With DEF at 32.5% and urea solution at 50% (PP/PVC, EPDM) both confirmed, this is a practical diesel-exhaust-fluid and fertilizer hauler - just remember DEF runs on 316SS stainless fittings. See each chemical's page under our chemical compatibility reference - for example sulfuric acid, sodium hypochlorite, hydrochloric acid, DEF, and urea solution - and read the full chemical-compatibility guide before ordering.
The mistake to avoid
The single biggest error on a 1.9 SG tank is treating the specific gravity rating as a suggestion. It is a hard limit: load a product denser than your fittings and gaskets are rated for, default to cheap PVC where the chart calls for CPVC, 316SS, or Aflas, or skip confirming HDLPE versus XLPE, and you risk fitting failure or stress cracking long before the tank looks full. If you are running fertilizer blends, also read up on tank stratification and mixing protocol, and on applicator and leg-tank DOT scope and 49 CFR portable-tank classification before you put it on the road. Reference the technical drawing on this page to confirm fitting locations against your plumbing plan.
This tank ships LTL from the Enduraplas plant in Neche, ND, with freight quoted live to your ZIP - get a number now with the Freight Cost Estimator or call us at 866-418-1777. Questions on the 1.9 SG rating, the steel frame, or matching fittings to your chemical? We will spec it with you before you buy.
