DC-900400-1.9, Duracast 400 Gallon Heavy Duty Vertical Tank | 900400 Built for long-lasting strength, these above-ground tanks can hold harmful chemicals and face stormy weather with no problem. These tanks are manufactured to handle liquids and chemicals up to 1.9 specific gravity without becoming damaged. The UV-stabilized resin protects these tanks from harsh sunlight. Their high resistance to stress keeps these tanks from cracking or wearing down in harsh environments. Common storage uses for the 400 Gallon heavy duty tank include: liquid fertilizers, cleaning chemicals, potable water, wine and liquid animal feeds. If storing drinking water, choose black or green colored tanks to prevent algae growth.