Soft water is corrosive to hot tub equipment and shells, and a 400-gallon inflatable tub needs surprisingly precise dosing to avoid overshooting. This guide gives you exact calcium hardness increaser amounts based on your starting ppm, plus tips for adding it safely without clouding the water.
Low alkalinity in a 6-person hard-shell hot tub causes pH swings, cloudy water, and equipment corrosion. This guide gives exact baking soda doses by starting level, a comparison table, and a step-by-step process for getting your alkalinity into the 80-120 ppm target range safely.
Low alkalinity in a 300-gallon inflatable hot tub causes pH swings, corrosion, and irritated skin. This post gives you the exact baking soda dose per 10 ppm of alkalinity, walks through a full worked example, and explains how to add it correctly so it actually works.
A 2-person inflatable hot tub typically holds 150-250 gallons, while a hard-shell 2-person model holds 300-500 gallons. That difference isn’t just trivia – it changes every single chemical dose you calculate. This article breaks down the real numbers and what they mean for your routine.
A 2-person hot tub typically holds 150-250 gallons, while a 6-person model holds 400-500 gallons. That difference isn’t just trivia – it changes every single chemical dose you add. This post walks through the real numbers and shows you exactly how to dose for your actual water volume.
That sharp chlorine odor coming off your hot tub usually means your water has a chloramine problem, not a chlorine surplus. Chloramines form when chlorine bonds with contaminants and stops working as a sanitizer. Shocking the water breaks them apart and kills the smell.
Cold temperatures affect how hot tub chemicals dissolve, how fast sanitizer burns off, and how often you need to test. This guide covers the specific chemistry adjustments that matter when the temperature drops below freezing outside your tub.
If your hot tub pH climbs back up within a day or two no matter how much pH decreaser you add, you are not doing anything wrong – the tub itself is fighting you. This post explains the real reasons pH keeps rising in hot tubs and gives you a step-by-step fix that actually sticks.
Bromine and chlorine are both effective hot tub sanitizers, but they have real differences in cost, smell, ease of use, and performance at high temps. This breakdown covers what actually matters so you can pick the one that fits your setup and stop second-guessing yourself.
Bad-smelling hot tub water is almost always a chemistry problem, not a cleanliness problem. The smell tells you exactly what’s wrong. This guide walks you through the most common odors, what causes each one, and how to fix it without draining the tub unnecessarily.