Water Care
Why Is My Hot Tub Water Brown?
Brown hot tub water is documented with high iron or manganese in source water. Here's how manufacturers separate brown water from green algae and post-fill metal reactions.
Read guideWater Care
Practical water care guidance for clear, balanced hot tub water — chemistry basics, cloudy water, foam, and filter care.
Clear water starts with a few habits: test regularly, keep filters clean, and make small chemistry adjustments instead of large swings. TubWise water care guides are written for homeowners who want plain-language steps without lab jargon. Follow your spa manual and product labels for dosing, and treat brand-specific chemistry ranges as scoped to that source.
Articles
Water Clarity and Color
Water Care
Why Is My Hot Tub Water Discolored After Filling?
Discolored hot tub water right after a refill often traces to metals or other fill-water contaminants. Here's what Hot Spring manuals and FAQs say to check.
Read guideWater Care
Why Is My Hot Tub Water Green?
Green hot tub water can point to algae from low sanitizer and high pH, or dissolved iron and copper. Here's how manufacturers describe telling them apart.
Read guideWater Care
How Long Does It Take Cloudy Hot Tub Water to Clear?
There's no single fixed timeline. How long cloudy hot tub water takes to clear depends on the cause and how completely you've corrected it.
Read guideWater Care
Why Is My Hot Tub Water Cloudy?
Cloudy hot tub water can trace back to water chemistry, sanitizer, filtration, or old water. Here's how to narrow it down and when to stop using the spa.
Read guideFoam and Surface Issues
Water Care
Why Do My Hot Tub Surfaces Feel Slimy?
Slimy or slippery hot tub seats, walls, or jets are a manufacturer-listed cue to drain and clean. Here's what Jacuzzi says, without guessing at biofilm.
Read guideWater Care
Why Does My Hot Tub Surface Feel Rough or Sandy?
A rough or sandy hot tub surface can be calcium scale, but texture alone is not a diagnosis. Here's how to separate scale feel from scum rings and metal stains.
Read guideWater Care
Why Is There a Ring Around My Hot Tub Waterline?
A hot tub waterline ring is often oils and dirt at the surface. Here's how Hot Spring and Jacuzzi describe scum rings, scale deposits, and safe cleanup.
Read guideWater Care
Can Soap, Lotion, or Detergent Cause Hot Tub Foam?
Yes. Manufacturer guidance names soap, lotion, and detergent residue from bathers and swimwear as documented causes of hot tub foam. Here's how it gets into the water.
Read guideWater Care
Is Foamy Hot Tub Water Safe to Use?
Foam by itself doesn't confirm the water is safe or unsafe. Here's how to check sanitizer and other water conditions before deciding whether to use the spa.
Read guideWater Care
Why Is My Hot Tub Water Foamy?
Foamy hot tub water can trace back to soap and body products, low calcium hardness, or old water. Here are the causes manufacturers document and what to check.
Read guideScale, Stains, and Fill Water
Water Care
How to Fill a Hot Tub With Hard Water
Hard fill water can raise calcium and leave scale or metal issues later. Here's Hot Spring's documented fill precautions without universal hardness targets or dosing.
Read guideWater Care
Why Does My Hot Tub Have Rust-Colored Stains?
Rust-colored hot tub stains often track to iron or copper in source water and low pH or alkalinity. Here's what Hot Spring manuals say without assuming the spa is rusting.
Read guideWater Care
Why Is There Scale on My Hot Tub Shell?
Hot tub shell scale is calcium deposit from high calcium and high pH or alkalinity. Here's how Hot Spring and related manufacturer guidance describe causes and cleanup.
Read guideOdor
Water Care
Why Does My Hot Tub Smell Like Chlorine?
A strong chlorine smell in a hot tub often points to chloramines and low pH, not proof that free chlorine is high. Here's what manufacturer manuals say.
Read guideWater Care
Why Does My Hot Tub Water Smell Bad?
Bad hot tub odor can come from organics, low sanitizer, low pH, or bacteria growth. Here's how manufacturers separate musty smells from chemistry issues.
Read guideChemistry After Treatment
Water Care
Hot Tub Foam After Adding Chemicals: What Happened?
Foam right after adding chemicals can come from jet aeration, the order products were added, or excess dosing. Here's how to tell these documented possibilities apart.
Read guideWater Care
Hot Tub Water Cloudy After Adding Chemicals
If your hot tub turned cloudy right after adding chemicals, the cause can be the order, amount, or mix of products used. Here's what to check.
Read guideFilters and Draining
Water Care
Can a Dirty Filter Make Hot Tub Water Cloudy?
Yes. A dirty or clogged filter is a documented cause of cloudy hot tub water. Here's how to tell if your filter is the cause and how to check it safely.
Read guideWater Care
Should You Drain a Hot Tub if the Water Is Cloudy?
Not always. Manufacturers point to draining only after correct chemistry, a clean filter, and treatment haven't cleared the water. Here's how to decide.
Read guide