
Backyard Pool & Spa
Forum
For a Limited Time:
Be a Founding Member & Help Build This Community
Get exclusive early access and shape the future of our forum.
Join now and be recognized as a valued founding member!
Find Answers to Your Pool & Hot Tub Questions
Or Join the Conversation

Our Forum
Join our community of pool and spa owners! Get expert advice, ask questions, and share your experiences.
Are you a member?
Not a member?
Pool Maintenance Blog
Learn how to keep your pool water clean and balanced with expert tips, step-by-step guides, and troubleshooting advice.
Hot Tub Maintenance Blog
Discover the best ways to maintain your hot tub, prevent issues, and enjoy a relaxing, hassle-free spa experience.
Related Articles
-
Liquid Chlorine Dose for a 15,000-Gallon Vinyl Liner Pool After Rain and Heavy Use

A week of rain plus heavy swimmer traffic is one of the fastest ways to crash your pool's chlorine. This post walks through exactly how much liquid chlorine a 15,000-gallon vinyl liner pool needs to recover, with real numbers and a step-by-step process.
-
Muriatic Acid to Lower Alkalinity From 160 to 100 ppm in a 20,000-Gallon Pool

High alkalinity in a 20,000-gallon pool takes a specific muriatic acid dose to fix, and the risk is overshooting pH on the way down. This guide gives you the exact amount, a step-by-step process, and how to keep pH above 7.2 throughout.
-
Muriatic Acid for a 20,000-Gallon Vinyl Liner Pool: pH 7.9 Down to 7.4

Opening a vinyl liner pool and finding pH at 7.9 is common, but adding too much muriatic acid at once can wrinkle your liner or drop alkalinity too far. This guide gives you the exact dose, a worked example, and a safe step-by-step process for bringing pH from 7.9 down to 7.4.
-
Borax vs Boric Acid for a 20,000-Gallon Pool: Hitting 50 ppm From Zero

Reaching 50 ppm borates in a 20,000-gallon pool sounds complicated until you do the math once. This guide shows exactly how much borax or boric acid to add, how to dissolve it, and what to expect when the dose is right.
π‘ Ask The Experts
Troubleshooting Hub
Pool FAQs
πΉ Cause: Poor filtration, high pH, or excessive debris.
πΉ Solution: Clean the filter, balance pH (7.2-7.6), and shock the pool.
πΉ Cause: Low chlorine levels or poor circulation.
πΉ Solution: Brush the walls, shock the pool, and add an algaecide.
πΉ Cause: High pH (alkaline) or low pH (acidic).
πΉ Solution: Use pH increaser if too low or pH reducer if too high.
πΉ Cause: Chloramines, formed when chlorine binds with contaminants.
πΉ Solution: Shock the pool to break down chloramines.
Hot Tub FAQs
πΉ Cause: Residue from soaps, lotions, or body oils.
πΉ Solution: Use a foam reducer and rinse before using the hot tub.
πΉ Cause: Bacteria buildup or low sanitizer levels.
πΉ Solution: Shock the water and check chlorine/bromine levels.
πΉ Cause: Algae or high metal content.
πΉ Solution: Shock the tub and use a metal sequestrant.
πΉ Solution: Every 3-4 months, or sooner if water quality declines.
