H2Oracle

Getting started

Ten minutes to set up, then a few taps after each test.

On this page

1. Tell it about your water

The first time it opens, H2Oracle shows a short guide and asks how many gallons your pool and hot tub hold. Every dose is worked out from that, so it’s worth getting close: the manual or the builder will have it. Change it any time in Settings (the slider icon at the top right), where you can also:

Don’t have a hot tub, or a pool? Just don’t log anything for it.

2. Log your first test

Tap + then Add Reading. Type in what your kit says, or switch Enter as to Taylor drops to enter the drops you counted with a Taylor K-2006 and let the app turn them into ppm. Fill in what you tested and leave the rest.

Test CYA (stabilizer) early. How much chlorine is enough depends on it, so until it’s tested the app uses a fixed chlorine range. It asks for TA too, which pH doses depend on.

If something is out of range, the form says what to add and how much, for your volume and the product you use. Save, and Log this treatment in the reading’s details adds it as a chemical in one tap.

3. Log what you add

+ › Add Chemical: pick or type the product, the amount and the unit. As you type it shows what it will do to the water. Log everything, including tablets and shock: the estimates and predictions are only as good as what they know was added.

4. Log swims and soaks

+ › Log Session: how many people, and how long. Swimmers and soakers use up chlorine (in a hot tub, a lot of it), and the hot tub’s water-change date goes by them.

5. Read the status card

At the top of each tab, the status card answers “can we get in?”:

6. Set your reminders

Tap the bell. Pick the days and time to test (Sunday at 9 AM to begin with), and whether to get a reminder to re-test a few hours after adding chemicals. Treatment plans, predictions and upkeep have their own switches. Reminders come from the phone itself, so they work with no connection.

7. Log the last water change and filter clean

The upkeep chips start as “not logged yet”. Tap one and Log the last one, with the date it was done, roughly. From then on each one counts down to when it’s next due.

Then, when you’re ready