The Pump should always provide an steady water pressure when using on low or high speeds. However, if this pressure starts to increase and decrease suddenly while the tub is running the circulation Pump (low speed), the water level may be too low. The waterfall flow would continuously cycle between low and high pressure and the pressure coming from the jets will also be variable.
The water level should always be touching the bottom of the LED lights inside the tub, completely covering all the jets. If the water level is not touching the led lights, simply add water until the required level has been reached and run the Pump to confirm if the issue has been resolved.
To watch a video showing an example of an irregular water pressure due to a low water level, click on the attachment.
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