The Enduraplas 2500 Gallon Yellow Horizontal Sump Bottom Leg Tank (SKU THD02500Y) is built for hauling and field transfer, where the load rides low and the tank empties clean. Molded in yellow polyethylene at a 2,500-gallon working capacity, it carries a 1.9 specific gravity rating, meaning it is engineered to handle dense liquids well beyond the weight of water. The sump bottom drains toward the low point so you can pull the load down to the last usable gallons, and the integrated leg design seats the tank flat on a trailer or skid for transport. If you are shopping for a 2500 horizontal leg tank for fertilizer or heavy-solution transfer, this is exactly that.
Will it work for your load
The footprint is 87 in wide by 130 in long, standing 77 in tall - dimensions that matter when you are matching the tank to a trailer deck or applicator frame. Filled with water this tank weighs about 20,850 lb full; at its maximum 1.9 SG rating it is built to carry up to roughly 39,615 lb of contents, so confirm your trailer, axles, and tie-down rating handle that weight before you load. The 1.9 SG rating is the key number: a horizontal leg tank like this one is commonly run as a transport or nurse tank for fertilizer blends and heavy solutions, not just water. For perspective, even 98% sulfuric acid at roughly 1.84 SG sits right at this tank's 1.9 ceiling, so there is effectively no margin left for anything denser. Run the numbers through our Tank Sizing Calculator and the Tank Sizing Guide to verify capacity and contents weight against your equipment.
Chemical compatibility
Before you order for any chemical service, confirm the resin with us at 866-418-1777. Our data records this tank's resin as HDLPE but flags it with a question mark, and crosslinked (XLPE) versus linear (HDLPE) polyethylene behave differently with aggressive chemistries - do not commit a tank of acid or oxidizer to a "?". This is a 1.9 SG-rated polyethylene tank, and the compatibility below is drawn from the chemical-resistance data: it is concentration- and temperature-specific, and conditional on installing the listed fitting and gasket materials. The pack does not specify included fittings, so plan to source the correct hardware - call 866-418-1777 for fitting selection.
EPDM-gasket chemistries (generally PVC fittings) include aluminum sulfate (50%), calcium chloride (40%), ethylene glycol (100%), ferric chloride (50%), ferric sulfate (60%), ferrous sulfate (20%), magnesium chloride (30%), polyaluminum chloride, potassium carbonate (50%), potassium hydroxide (saturated), sodium carbonate (30%), sodium thiosulfate (40%), sodium bisulfate (PVC/PP), sodium bisulfite (PVC/PP), and ozonated water (up to 10 PPM). DEF at 32.5% (316SS fittings, EPDM), propylene glycol (PP/316SS, EPDM), zinc orthophosphate (PP/316SS, EPDM), urea solution at 50% (PP/PVC, EPDM), and acetic acid at 60% (PP/PVC, EPDM) also run on EPDM but call for upgraded fitting metal or plastic as noted.
Chemistries that require Viton or Aflas and upgraded fittings include sulfuric acid (98%, CPVC fittings, Viton), hydrochloric acid (37%, PVC, Viton), hydrofluoric acid (48%, PP/PVC, Viton), hydrofluosilicic acid (26%, PP/PVC, Viton), hydrogen peroxide (50%, PVC, Viton), phosphoric acid (85%, PVC, Viton), sodium hypochlorite (<16.5%, PVC, Viton), and peracetic acid (30%, 316SS, Aflas). Match the gasket and fitting material to your exact chemistry and concentration, and verify against the OEM chemical-resistance chart at your service temperature. Our chemical compatibility reference walks through it before you order.
The mistake to avoid
The most common error on a 1.9 SG-rated transport tank is loading to volume instead of weight. At 2,500 gallons of a dense fertilizer blend or heavy solution you can be well over 39,000 lb of contents - inside the tank's rating, but potentially far over your trailer and DOT axle limits. Size the load to your equipment, not the tank. If you are running this as a fertilizer or applicator nurse tank, our guide on applicator and leg tanks for fertilizer and DOT non-roadable trailer scope, the breakdown of portable utility tanks and the agricultural exemption, and the deep dive on fertilizer-blend tank stratification and mixing protocol cover the regulatory and field-handling details that catch people off guard.
This tank ships empty as oversized LTL freight from the Enduraplas plant in Neche, ND - about 20,850 lb water-full and up to roughly 39,615 lb at 1.9 SG once loaded, on an 87 x 130 in footprint that drives both the carrier quote and your trailer decision. Get your live number to your delivery ZIP with the Freight Cost Estimator, or call our team at 866-418-1777 for sizing, fitting, and freight help.
