Skip to content

👋 FREE SHIPPING ON ORDERS OF $75+ (Some exclusions)

Thousands of Products Online—Over 100,000 More In-Store! Come Explore Our Full Selection.

  • Categories
    • Apparel & Footwear
    • Automotive
    • Hardware
    • Sporting Goods
    • Toys
  • Shop
    • Clothing
      • Carhartt
      • Georgia Boots
      • Men's Apparel
      • Women's Apparel
      • Western Boots
      • Socks
    • Automotive
      • Automotive Hardparts
      • Automotive Tools
      • Car Cleaning Supplies
      • Headlight Bulbs
      • Motorcycle Helmets and Goggles
      • RV
    • Promotions
      • Intex Pool Blowout '25
      • On Sale
      • Game Night
      • Lawn & Garden Supplies
      • Paint & Painting Supplies
      • Pokémon Paradise
    • Seasonal
      • Aquatics
      • Cooling Supplies
      • Hiking Gear
      • Summer Collection
      • Swimwear
    • Sporting Goods
      • Ammunition
      • Air Shooting
      • Coolers
      • Camping
      • Disc Golf
      • Drinkware
      • Fishing (Rods, Reels, & Supplies
      • Float and Towable Tubes
      • Hunting & Archery
      • Hydro Flask
      • Intex Summer Inflatables and Accessories
      • Kayaks and Paddle Boards
      • Knives
      • Life Jackets and PFD
      • Lures
      • Outdoor & Active Play
      • Pepper Spray & Pepper Projectiles
      • Personal Protection
      • Snow Sleds
      • Sports Winter Prep
      • Yeti
    • Toys
      • Action Figures & Figurines
      • Arts & Crafts
      • Board Games
      • Card Games
      • Dice & Dice Games
      • LEGO
      • Model Kits
      • Outdoor & Active
      • Plush
      • Pokémon
      • Posters
      • Preschool Toys
      • Puzzles
      • Remote Controlled Toys
      • Stickers
      • Trading Card Games and Accessories
    • Lawn & BBQ
      • BBQ Grills & Smokers
      • BBQ Accessories
      • BBQ Rubs & Sauces
      • Lawn & Garden
      • Outdoor Tools
      • Outdoor Power Tools
      • Hose & Sprinklers
      • STIHL
    • Hardware
      • Adhesives
      • Air Conditioners & Fans
      • Electrical
      • Fasteners
      • Housewares
      • Paint
      • Pets
      • Plumbing
      • Tools
  • Current Promotions
  • Gift Cards
  • About Us
    • About Us
    • Business to Business
    • Donations
    • Careers
  • Locations
  • Contact
The General Store Spokane
Login
Spend $75 more for FREE shipping.
FREE shipping will be applied at checkout

Your cart is empty

Continue shopping
0Cart($0.00)
  • Shop
    • Clothing
      • Carhartt
      • Georgia Boots
      • Men's Apparel
      • Women's Apparel
      • Western Boots
      • Socks
    • Automotive
      • Automotive Hardparts
      • Automotive Tools
      • Car Cleaning Supplies
      • Headlight Bulbs
      • Motorcycle Helmets and Goggles
      • RV
    • Promotions
      • Intex Pool Blowout '25
      • On Sale
      • Game Night
      • Lawn & Garden Supplies
      • Paint & Painting Supplies
      • Pokémon Paradise
    • Seasonal
      • Aquatics
      • Cooling Supplies
      • Hiking Gear
      • Summer Collection
      • Swimwear
    • Sporting Goods
      • Ammunition
      • Air Shooting
      • Coolers
      • Camping
      • Disc Golf
      • Drinkware
      • Fishing (Rods, Reels, & Supplies
      • Float and Towable Tubes
      • Hunting & Archery
      • Hydro Flask
      • Intex Summer Inflatables and Accessories
      • Kayaks and Paddle Boards
      • Knives
      • Life Jackets and PFD
      • Lures
      • Outdoor & Active Play
      • Pepper Spray & Pepper Projectiles
      • Personal Protection
      • Snow Sleds
      • Sports Winter Prep
      • Yeti
    • Toys
      • Action Figures & Figurines
      • Arts & Crafts
      • Board Games
      • Card Games
      • Dice & Dice Games
      • LEGO
      • Model Kits
      • Outdoor & Active
      • Plush
      • Pokémon
      • Posters
      • Preschool Toys
      • Puzzles
      • Remote Controlled Toys
      • Stickers
      • Trading Card Games and Accessories
    • Lawn & BBQ
      • BBQ Grills & Smokers
      • BBQ Accessories
      • BBQ Rubs & Sauces
      • Lawn & Garden
      • Outdoor Tools
      • Outdoor Power Tools
      • Hose & Sprinklers
      • STIHL
    • Hardware
      • Adhesives
      • Air Conditioners & Fans
      • Electrical
      • Fasteners
      • Housewares
      • Paint
      • Pets
      • Plumbing
      • Tools
  • Current Promotions
  • Gift Cards
  • About Us
    • About Us
    • Business to Business
    • Donations
    • Careers
  • Locations
  • Contact
Home Shop Pools and Pool Supplies C2 HTH Spa Powder Alkalinity Increaser 1.25 lb
ACE HARDWARE CORPORATIONSKU: 8999120

HTH Spa Powder Alkalinity Increaser 1.25 lb

$13.99 /
Shipping calculated at checkout.
About This Item Low alkalinity levels in spa water can cause undue damage to surfaces and equipment. HTH Spa Alkalinity Up not only raises the total alkalinity in your pool water but it also helps keep the pH levels from fluctuating. This helps prolong the life of spa surfaces and equipment like filter systems and ensures healthy comfortable water by protecting against skin and eye irritation. HTH Spa Alkalinity Up is compatible with all sanitizers including bromine chlorine and biguanide. How To Use HTH Spa Alkalinity Up Use HTH Spa Test Strips to test your spa water. If the total alkalinity level measures below 80 ppm apply HTH Spa Alkalinity Up directly to your spa water. Refer to on pack instructions for the correct dosage. Allow water to circulate for 1 to 3 hours. Test and repeat as needed to maintain total alkalinity levels between 80 and 120 ppm. About HTH Spa Care For generations HTH has been leading the way in smart spa care. We do the chemistry so you can just take it easy. From the very first day you open your spa HTH is here to help maintain and problem solve. Our complete range of simple to use no nonsense products empower you to balance sanitize and treat your spa. It is everything you need and nothing you do not. There is nothing more relaxing than taking it easy in sparkling clean water. With HTH your spa is always ready when you are.
  • Easily raise the total alkalinity levels in your spa water to ensure it remains clear, clean and healthy
  • Keeps total alkalinity and pH levels in range. Protects against skin & eye irritation. Protects spa equipment & surfaces
  • Creates more comfortable water Keeps the pH levels in range, which helps protect against skin and eye irritation.
  • Prolongs the life of your spa Helps prevent damage to spa surfaces and equipment (pumps, filters and heaters).
  • Compatible with all sanitizers HTH Spa Alkalinity Up works great with bromine, chlorine and biguanide systems.
  • You're all clear with HTH For best results, use HTH Spa Test Strips twice a week to test, balance and maintain total alkalinity levels between 80 and 120 ppm. *
HTH Spa Powder Alkalinity Increaser 1.25 lb
$13.99 /
Low Stock (3)
 
 
This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted.

Pickup available at The General Store

Usually ready in 2-4 days

Apparel
Automotive
Hardware
Sporting Goods
Toys
Get in touch
509.444.8005
APPAREL
  • Women's Apparel
  • Men's Apparel
  • Footwear
  • Socks
  • Sleepwear
  • Carhartt
AUTOMOTIVE
  • Automotive Hard Parts
  • Automotive Tools
  • Motorcycle Helmets and Goggles
  • Auxbeams
HARDWARE
  • Tools
  • Paint
  • Plumbing
  • Electrical
  • Adhesives
  • Air Conditioners and Fans
  • Fasteners
  • Lawn & BBQ
SPORTING GOODS
  • Air Shooting
  • Ammunition
  • Camping
  • Coolers
  • Disc Golf
  • Drinkware
  • Fishing
  • Hunting & Archery
  • Knives
  • Outdoor & Active Play
TOYS
  • Action Figures and Collectibles
  • Arts & Crafts
  • Barbie
  • Board Games
  • LEGO
  • Plush
  • Pokémon
  • Puzzles
  • Trading Cards, RPGs & Figurines
ABOUT
  • About Us
  • Business to Business
  • Donations
  • Careers
Love Emails?

Sign up for our email list and get 10% off your first online order!

SIGN UP
Quick Links
  • Search
  • Shipping Policy
  • Refund Policy
  • Privacy Policy
  • Terms Of Service

© 2025 The General Store Spokane, All rights reserved. Powered by Shopify