Have a read at any new spa installation instructions?
Here's just one.
RISKS TO AVOID
DANGER - RISK OF INJURY
• To reduce the risk of injury to persons, DO NOT remove suction
fittings (filter standpipes) located in the filter compartment.
• The suction fittings in the spa are sized to match the specific water
flow created by the pump. Never replace a suction fitting with one
rated less than the flow rate marked on the original suction fitting.
• There is a danger of slipping and falling. Remember that wet surfaces
can be very slippery. Take care when entering or exiting the spa.
• Never operate spa if the suction fittings are broken or missing.
• People with infectious diseases should not use the spa.
• Keep any loose articles of clothing, long hair, or hanging jewelry away
from rotating jets or other moving components.
INCREASED SIDE EFFECTS OF MEDICATION
• The use of drugs, alcohol may cause unconsciousness with the
possibility of drowning.
• Persons using medications should consult a physician before using
a spa; some medication may cause a user to become drowsy,
while other medication may affect heart rate, blood pressure, and
circulation.
• Persons taking medications which induce drowsiness, such as
tranquilizers, antihistamines, or anticoagulants should not use the
spa.