Hi. I’m Marco, your pool guy.
Test your water and I’ll tell you if it’s ready to swim, what to add, and exactly how much for your pool. Free for pool owners.
Pool care, one step at a time.
- Can I swim?Log a test with a tap for each reading. Marco says swim-ready, needs a little help, or hold off.
- What to add, and how muchThe first fix for your pool’s size, why it matters, then the next. Done when you are.
- Ask MarcoCloudy, green, a pH that won’t stay put: ask about your pool and get an answer for your water.
- Find a proA new pool, a resurface, weekly service or a repair. Marco asks a few questions and sends it to a Waterline pro near you.
- Follow your pool jobWhen your pool company runs Waterline: progress, photos and daily notes, change orders to sign, invoices to pay and messages with their team.
The real Marco, with a sample pool.
Use Marco right here on this page. Nothing is saved.
You decide who hears from you.
- A pro gets your project and contact details only when you tick the box and press send.
- Offers from pool companies near you are off unless you turn them on. At most 2 a month, and your email and phone stay private until you answer one.
- Share your tests with your pool company only if you want to. Stop any time.
Marco’s amounts are guides for your pool’s size. Follow the label on every product, handle chemicals safely, and ask a pro when you’re unsure.
