Water match
Soft, Balanced, or Hard, from your hose ZIP. Not for sale yet.
Enter a ZIP. We match the fill water, then you can join the free founding list. Nothing is charged.
Free. ZIP only. Email only if you join.

Not on sale yet. Nothing is charged. Online only, shipped to you once boxes are live.
Your hose water decides how your hot tub behaves.
Every Cycle Box uses the same five packets. Your water decides how many of each.
Soft.
Low calcium and alkalinity. Tends to bounce and foam. We add alkalinity and calcium, then lock pH.
Balanced.
Close to target already. A small alkalinity trim if your strip calls for it, then lock pH.
Hard.
High alkalinity or calcium. pH climbs fast and scale can build on the heater. We bring alkalinity down in stages, then lock pH.

Mineral texture. Not our packet.
One box per water change
Most owners drain every three to four months. The Cycle Box arrives on that rhythm with everything for one water cycle except your sanitizer.
Drain day.
Run the Line Flush through the plumbing, then drain.
Fill day.
Dip a strip, add your matched packets, then pH Lock.
Every week.
One enzyme dose and one Weekly Clear pouch.
Next box.
It arrives before your next drain, counted for your water again.
Planned prices
Planned, not for sale: $119 a quarter, $129 one-time, $149 First Fill, $20 more for a large tub.
Can I buy one today? Not yet.
Why your pH won't sit still
Your fill water carries dissolved carbonate. That's what a strip calls alkalinity. Every time the jets run, they knock CO₂ out of the water, and pH climbs. Water with high alkalinity climbs fastest.
Frequently asked questions
- What is the Cycle Box?
- A quarterly box with everything for one drain-to-drain water change except sanitizer: Line Flush, fill packets counted for your water, pH Lock, weekly enzyme and oxidizer doses, and test strips.
- Can I buy one today?
- Not yet. The Cycle Box is still in planning, and nothing is for sale. You can check your water and join the free founding list.
- Does the Cycle Box replace my sanitizer?
- No. Keep free chlorine at 3 ppm or higher, or bromine at 4–8 ppm, with your own registered product whenever the tub is in use.
- How much will it cost?
- Not for sale yet. Nothing is charged.
- I bought a founding membership. What happens now?
- We paused new founding memberships. You will get a personal email with a choice of a credit toward your first Cycle Box or a full refund.
- Is Water Match a lab test?
- No. It's an estimate based on your local water system's data. You confirm it with a strip on fill day, and the card tells you exactly what to do if the strip disagrees.
