WSP 110,000 Grain Mineral Tank - Twin-Tank, Fleck 9100

This WSP 110,000 Grain Mineral Tank is a twin-tank pressure vessel designed to hold the media bed in a whole-house water softening system. Built on the reliable Fleck 9100 control platform, it supports continuous soft water delivery without downtime during regeneration.

The Problem

If your home has hard water, you may notice mineral buildup on faucets, cloudy spots on dishes, or soap that doesn’t lather well. Your water softener’s mineral tank—the pressure vessel that contains the resin media—plays a key role in removing these minerals. When the tank is aging, damaged, or undersized, your system may not treat water effectively, leaving you with the same hard water issues day after day.

Why It’s Happening

Hard water contains minerals like calcium and magnesium that cause scale buildup. Your mineral tank holds resin beads that capture these minerals through a process called ion exchange—where the hard minerals are swapped for sodium or potassium ions. If the tank is compromised or too small, the resin can’t treat enough water, leading to mineral deposits in your home. A simple water hardness test before and after the tank can confirm if it’s working properly.

What It’s Costing You to Leave It

Ignoring a worn-out or inadequate mineral tank means you’ll continue to see scale buildup inside appliances and on plumbing fixtures. Scale clogs pipes, reduces water flow, and forces your water heater and appliances to work harder, shortening their lifespan. You’ll likely use more soap and detergent because hard water interferes with cleaning. Over time, those orange rings, cloudy glassware, and stiff towels become a daily nuisance that wastes time and resources.

How This System Fixes It

This twin-tank mineral tank system works with the Fleck 9100 control valve to provide continuous soft water by holding the resin media that captures hard minerals. When one tank is softening water, the other regenerates (cleans itself), so you never have a break in soft water. The system uses metered regeneration, which means it only regenerates when the resin is actually spent, saving salt and water.

What This System Can Handle

The WSP 110,000 Grain Mineral Tank, paired with the Fleck 9100 twin-tank valve, is designed for homes or facilities with high water demand or very hard water. Each tank holds a large volume of resin capable of softening up to 110,000 grains of hardness before needing regeneration. Because the two tanks alternate, you get soft water 24/7 without interruption. This system handles continuous use with efficiency, regenerating only as needed to maintain soft water quality and reduce waste.

What You Actually Get

You receive the pressure vessel mineral tanks covered by a lifetime warranty, ensuring the tank itself is built to last. The system features the Fleck 9100 twin-tank metered control valve and electronics, which come with the manufacturer’s standard warranty. This combination offers a robust, serviceable setup with parts available for years to come.

Is This the Right Size for You?

This 110,000 grain capacity twin-tank mineral system suits homes and facilities with significant water hardness and high daily water use. If your water use is moderate or your hardness is lower, a smaller system may be more economical. Conversely, very large households or commercial sites with extreme hardness might need a larger or multi-stage system. Proper sizing ensures the system runs efficiently and regenerates at the right intervals.

Living With It

Maintenance involves regular salt refills for the softener’s regeneration process and occasional checks of the control valve settings. Because regeneration is metered by actual water use, salt and water consumption tend to be lower and less frequent than older timer-based systems. Expect to work with your plumber for any service needs or adjustments, as installation and maintenance are handled locally.

What It Won’t Do

This mineral tank system addresses hardness and scale-causing minerals but does not treat other water issues like sediment, chlorine taste or odor, iron staining, or bacteria. If you face those problems, additional filtration or treatment systems would be necessary.

Why Buy It From Us

Water Softener Plus supplies genuine, serviceable components rather than sealed disposable units. The mineral tank has a lifetime warranty, and parts for the Fleck 9100 control valve remain available long-term. We ship from Tampa with free U.S. shipping included and offer straightforward sizing advice from experienced water treatment professionals. Our 90-day money-back guarantee ensures you can buy with confidence.

Included with this system

• Lifetime warranty on the tank. The control valve and electronics carry the manufacturer's own warranty.

Specifications

The Next Step

Order the WSP 110,000 Grain Mineral Tank online today to upgrade your whole-house softening system and enjoy continuous soft water without interruption.