Hot tub care, made simple.
The right chemicals, in the right amounts, measured for your tub and delivered before you run out.
See how it worksAn estimate built around your tub, not a one-size box.
Ovastra is an adaptive model. A few simple inputs about your tub and how you use it let us estimate, fairly precisely, how much chemical you'll go through. We send exactly that and charge the card on file for what you use.
Four steps, then it runs itself.
Tell us about your tub
Size, model, sanitizer type and how often you soak. A few simple answers, no lab work.
We estimate your usage
Our adaptive model works out, fairly precisely, how much of each chemical your tub will go through.
Pre-measured packets arrive
Flat, single-dose sachets, color coded so you always know which one goes in next.
It keeps adjusting
As your habits and seasons change, the estimate updates, and we charge the card on file for what you'll actually use.
Less guessing. Fewer trips to the pool store.
Every packet is one dose. Open it, pour it in, and get back to the good part.
Try the calculator