Hot Tub Water Problems

Hot Tub Water Problems

Common hot tub water problems and how to fix them...

Problem

Cause

Solution

Cloudy water

Insufficient filtration

Check filters, power supply, and filtration Settings

Organic matter

Shock dose with a non-chlorine shock or replace some of the water

Insufficient sanitiser

Test and correct sanitiser (chlorine or bromine) as required

High pH or alkalinity

Test and correct pH and alkalinity (TA) as required using pH Reducer

Too many dissolved solids

Add a water clarifier to froup the particles to aid filtration.
Drain and refill some or all of the water

Water odour

Organic matter

Shock Dose using non-chlorine shock or replace some of the water

Low sanitiser

Test and correct sanitiser (chlorine or bromine) as required

Low pH

Test and correct pH as required using a pH Increaser

Musty smell

Bacteria or algae in water

Shock Dose using non-chlorine shock or replace some of the water. Re-test, if problem still apparent, add system flush and drain and refill. Multi-functional chlorine tablets are recommended to reduce the risk of algae.

Organic matter

Shock Dose using non-chlorine shock or replace some of the water

Too many dissolved solids

Drain and refill some or all of the water

Scum on waterline

Not washing before use

Always shower and rinse before use

Fake tan

Do not use hot tubs if wearing fake tan

Foam

Re-rinse bathing costumes after machine washing or have a separate bathingcostume for the spa and only rinse with warm water.

Skin or eye irritation

Organic matter build-up

Shock dose using non-chlorine shock,drain and refill some/all of the water. Test for correct pH.

Sanitiser is "combined"

Shock dose using non-chlorine shock, drain and refill some/all of the water. Test for correct pH.

Erratic pH

Low alkalinity levels

Increase Alkalinity (TA) levels (consider adding buffer) This will avoid 'pH bounce'

pH resists change

High alkalinity levels

Decrease alkalinity (TA) with "slug dose" of pH Reducer
(Add three capfuls of pH Reducer (6 heaped teaspoons) to a large plastic test tube already full of water. Shake/stir until dissolved. Turn off all pumps etc. place in middle of spa at elbow depth and empty avoiding disturbance to water. This is called a slug dose)

Only use the above steps as a guide, ensuring all safety precautions are taken and suitable eye protection and clothing are worn at all times. Always use the chemical manufacturers instructions. The measures given above are guidelines only. 1 Stop Spas accepts no liability whatsoever for circumstances arising from its use.