Hot Tub Serum Willy | Oil-Absorbing Spa Sponge
WillyĀ is part of Hot Tub Serum's line ofĀ oil-absorbing spongesĀ ā a simple, chemical-free way to keep your spa water clean. ItĀ floats on the surfaceĀ and quietly soaks up the body oils, lotions, makeup, and other contaminants bathers leave behind, capturing themĀ before they clog your filter or form scum linesĀ on the shell.
Those oils are the root of some of the most common spa annoyances. Left in the water, they collect at the surface and along the waterline, creating that greasyĀ scum ring, and they get pulled into your filter where they clog the pleats and shorten cartridge life. A floating absorber intercepts them at the surface ā exactly where they gather ā so they never reach the shell or the filter in the first place.
Crafted with a premiumĀ 3D air mesh skinĀ that maximizes surface contact for superior absorption, Willy isĀ reusable and washable, delivering powerful cleaning action with no chemicals and no hassle. It's one of the easiest upgrades you can make to your maintenance routine: just drop it in and let it work.
Hot Tub SerumĀ®
Hot Tub SerumĀ® Brand FAQs
What is Hot Tub Serum, and how is it different from other spa chemicals?
Hot Tub Serum is an EPA-registered water care line built around one idea most spa chemicals ignore: cleaning and protecting the inside of your spa's plumbing. Its products prevent and remove biofilmā the bacterial sludge that builds up in pipes and jets and keeps re-contaminating your water. Made by Serum Watercare, the line is registered with the EPA in all 50 states.
Does Hot Tub Serum replace my sanitizer?
No. Hot Tub Serum works along side your sanitizer, not instead of it. You still need to maintain an EPA-approved sanitizer (chlorine, bromine, salt, or a mineral system) at proper levels. Serum keeps your plumbing clean and makes your sanitizer more effective ā so most owners end up using less of their other chemicals ā but a sanitizer is always required.
What is biofilm, and why does it matter in a hot tub?
Biofilm is a slimy layer of bacteria that forms inside spa plumbing where you can't see or reach it. It protects the bacteria within it from your sanitizer, which is why an untreated spa can stay cloudy, smelly, or sanitizer-hungry no matter how carefully you dose. Because it hides in the pipes, it keeps coming back until it's addressed at the source ā which is exactly what Hot Tub Serum targets.
How does the Hot Tub Serum Total Clean System work?
It's a simple two-step regimen. First,Total Cleanse is added before a drain-and-refill to purge existing biofilm and gunk out of the plumbing. Then, once the spa is refilled,Total Maintenance is added weekly to keep that biofilm from ever coming back. Purge to clean, maintain to keep it clean.
Is Hot Tub Serum compatible with my sanitizer system?
Yes. Hot Tub Serum is compatible with all sanitizing systems ā chlorine, bromine, salt water generators, biguanide, and mineral systems such as The FrogĀ®, @easeĀ®, and Nature2Ā®. It's also unaffected by pH swings, cyanuric acid, and common oxidizers, so it keeps working even when your water chemistry drifts.
Is there a warranty benefit to using Hot Tub Serum?
Serum Watercare offers a Lifetime Jet Warranty for owners who use Total Maintenance weekly through an authorized dealer's auto-ship program. Because jet failure is often caused by scale and water-chemistry buildup that Serum helps prevent, the program covers replacement of removable jet inserts that fail due to water chemistry. Ask us about enrolling.
About Hot Tub SerumĀ®
Hot Tub Serum is a water care brand fromĀ Serum Watercare, built on a simple insight the rest of the industry overlooked: the biggest threat to clean hot tub water isn't in the water you can see ā it's theĀ biofilm hidden inside your plumbing. Where conventional chemicals only treat the water in the shell, Serum's EPA-registered formulas clean and protect the pipes, jets, and internal surfaces where bacterial sludge takes hold.
The result is theĀ Total Clean System: a purge product (Total Cleanse) that scrubs existing biofilm out of the plumbing before a drain-and-refill, and a weekly maintenance product (Total Maintenance) that keeps it from ever returning. Registered with the EPA inĀ all 50 statesĀ and backed by a first-of-its-kindĀ Lifetime Jet WarrantyĀ for regular users, Hot Tub Serum is designed to make spa care simpler while protecting the equipment you've invested in ā for water that stays clear, soft, and fresh with less work.
