How to edit your spa's water volume

Overview

You can adjust your spa’s water volume in the Gecko App to ensure that water care recommendations and dosing instructions are accurate.

Step-by-step instructions

1. Open the side menu (☰)
   Tap the Menu icon in the top-left corner of the screen.

2. Go to Settings → General
   Select Settings, then tap the General tab to open your spa’s basic details.

3. Tap “Edit” in the General section
   Under the General card, tap EDIT to enter edit mode.

4. Update your spa volume
   In the Volume field, enter your spa’s total water capacity.

   • You can switch between Liters or Gallons using the unit dropdown next to the value.

   • For best results, use the official capacity listed in your spa’s manual.

5. Tap “Save”
   Once you’ve entered the correct volume, tap SAVE in the top-right corner to apply your changes.

Estimate your spa volume

Your spa manufacturer or manual gives the most accurate volume. If you don't have it, measure the inside of the spa and the average water depth, then use one of these formulas:

Rectangular spa

• Length x Width x Depth x 7.5 (in feet) = Gallons

• Length x Width x Depth x 1000 (in meters) = Liters

Circular spa

• (Diameter ÷ 2) x (Diameter ÷ 2) x Depth x 23.5 (in feet) = Gallons

• (Diameter ÷ 2) x (Diameter ÷ 2) x Depth x 3140 (in meters) = Liters

Tips & related info

• Accurate water volume ensures that the dosing recommendations and chemical adjustments provided by the Gecko App are precise.

• If you’re not sure of your spa’s capacity, you can estimate it using this tool.