Is your hot tub water not looking quite right? 

Has it turned an abnormal colour, or is it cloudy? 

Before you panic and call a hot tub repair service, here is what your water is trying to tell you and how to fix it…

What to do if your hot tub water is green

If your water is looking green, the culprit is algae. The darker the shade of green, the worse the problem is. This can happen if:

  • You leave your hot tub uncovered while it is not in use 
  • You don’t use enough sanitizer 
  • Your hot tub’s filtration system isn’t working
  • It is introduced by a bather on their swimwear

To remove the algae from your water you will need to:

  • Deep clean your hot tub
  • Test your water 
  • Check your owners manual to see if you can drain it
  • Clean or replace your filter
  • Clean your hot tub’s cover
  • If you can’t drain your hot tub, shock the water 
  • Refill your hot tub and then shock the water 
  • Re-test your water and ensure that it is now properly balanced

What to do if your hot tub water is cloudy

Cloudy water is a sign that either your filter is no longer functioning properly, or that your water’s chemicals have become unbalanced due to:

  • Natural contaminants getting in your hot tub (grass, leaves, etc)
  • Human contaminates (sunscreen, makeup, etc)
  • Trace metal in the water from a hose
  • Not enough sanitizer
  • Unbalanced chemicals

To return your water to normal you will need to:

  • Test your water 
  • Clean your filter
  • Run the filter
  • Flush the circulation system
  • Balance your chemicals
  • If your chemicals are still unbalanced or your hot tub is still cloudy, shock the water
  • If metal is the issue, purchase a metal sequestrant which is available at your local pool supply store or look for it online

What to do if your hot tub water is foamy

Too much foam in a hot tub is one of the most common problems that hot tub owners will complain about. Not maintaining your hot tub properly means you almost certainly have to deal with this issue.

But how do you measure this? 

Typically speaking, any bubbles that form in your hot tub while the jets are running should not build on one another – which is to say that a single level of quick-dispersing bubbles on the surface of the water is normal. Bubbles that grow one on top of each other and climb higher out of the surface of the water is not normal.

This can be caused by:

  • Not replacing your filters often enough
  • Soap residue
  • Low calcium hardness levels

To return your bubbles to normal levels:

  • Test your water 
  • Clean or change your filter
  • Replace your water (consult your owner’s manual first)
  • Balance your hot tub chemicals
  • Purchase a foam reducer or hot tub enzymes for more stubborn situations, which is available at your local pool supply store or look for it online

What to do if your hot tub water has a layer of film on the surface 

Biofilm is bacteria residue that can propagate and eat away at your hot tub’s surfaces, becoming a major problem if it is not addressed.

This slimy, sticky film can be found on the surface of your hot tub’s water, on surfaces inside the hot tub, and inside your hot tub’s plumbing. Biofilm can form in hot tubs that have been sitting unused, either full of water or drained, but with water sitting in the pipes. Biofilm can also occur during normal hot tub use.

If left unattended, it can allow dangerous bacteria to proliferate, such as Legionella and E. coli.

To get rid of Biofilm:

  • Test your water 
  • Deep clean your hot tub 
  • Shock the water
  • Flush the circulation system
  • Balance your chemicals
  • If the issue is still present, check your owner’s manual to see if you can drain it
  • Give your tub another clean, with special attention given to the plumbing
  • Refill your hot tub and then shock the water 
  • Re-test your water and ensure that it is now properly balanced

 

Are you having issues with your pool water instead? Learn what it is trying to tell you here.