Hot Tub Green Water; Reasons And Effective Ways To Avoid it

blue water

Algae are one of the biggest enemies of shiny water and surfaces of the hot tub. It appears as the most irritating organism, but the good news is that you can identify the ways it hits the hot tub and eliminates all the reasons for its presence.

Ø Filter not working:

Hot tub filters are for cleaning the water, if they are not well-cleaned, they will not filter the water properly. There will be cloudy water instead of shiny water. For best water quality, it needs filtration once a day. If the filter is not functioning properly, fix this issue first.

Ø Uncovered hot tub:

A hot tub cover can prevent many types of debris from reaching the hot tub. Keeping the hot tub cover is the easiest possible way to avoid algae infestation in the hot tub. The hot tub cover keeps the pH level balanced. It protects the water from UV rays that cause the algae evolution. A hot tub cover can work well to prevent hot tub water from getting green.


Ø Not well sanitized:

If your hot tub lacks the appropriate quantity of chlorine, there are suitable circumstances of algae invasion. Algae find their way where there is no proper sanitization of water.

Ø Mixing of substances:

Not always your negligence is the cause of algae infestation, but it can be sometimes a hot tub user who is causing mixing of algae in the hot tub. This happens when someone uses a hot tub after using a pool with algae content. It reaches your hot tub through their swimsuits.

Copper (Another cause of green water):

The mineral content of water is sometimes the cause of green water in the hot tub. Copper can mix with hot tub water through plumbing, heating elements, and well water.

If copper is the only reason for green water, you can simply add metal remover liquid to the water to turn the watercolor blue again.  Removal; of copper is much simpler than dealing with algae, for which you have to ponder over the ways to avoid.

Easy ways to avoid algae in a hot tub:

To avoid algae and keep your hot tub water sparkly blue, follow these simple and working ways:

  • Take care of filter: Check your filter regularly. Keep an eye on its performance, if it slows down, replaces it immediately. A well-conditioned filter can solve many issues of water and cleaning without any hassle from your side.
  • Test the water regularly: You can properly sanitize the hot tub water if you are aware of the proportion of all chemicals. Test the water frequently and add the required dose of chemicals to avoid the algae. A low level of sanitizer can allow the fast growth of algae.
  • Cover your hot tub: Hot tub covers provide have many benefits to owners in taking good care of their hot tub. If you keep it covered, there are fewer chances of algae infestation in the hot tub. It stops the debris entering the hot tub, maintains the pH level, and reduces the UV rays that are the major cause of the fast growth of algae that turns the hot tub water green
  • Proper cleaning before entering the hot tub: Avoid how algae can enter into the hot tub through users. Properly clean the swimsuits and body before getting into the hot tub. This will reduce the speed of algae growth.

What to do if the hot tub water appears green?

You will need to take great care to avoid the sparkly green water in your hot tub. But, if algae find its way to the hot tub after all the upkeeps, there are some simple steps to do to eliminate it from the hot tub.

Step #1: Drain it completely:

Drain the water from your hot tub completely. The water with enough algae content is not capable of staying for future use.

After the water is out, come to the interior of the hot tub. Scrub the walls thoroughly, it is better to use some disinfectant. Many bleaches and hot tub cleaners are available in the market.

Don’t forget to clean the pillows; this will prevent the immediate accumulation of contaminations.

Step #2: Clean the filter:

Cleaning the filter is the essential step in the cleaning of the hot tub. If there are algae in the filter, there are greater possibilities that it has found its way from the filter to turn the hot tub water green.

. The deep cleaning will entail removing the filter and washing it with a hot tub filter cleaning solution to get rid of any built-up residue or impurities that require more than a rinse.

If it does not appear to work properly, then don’t delay in changing it. There will be no chance of algae appearing through the new one.

Step#3: Fill up the hot tub again:

When you have completed the cleaning activity, it is time to fill the hot tub again with clean water. Turn on the hose and add the water to a safe limit. If there is a hose filter, then contaminations will not find their way through the water. When the water reaches the required level, turn off the hose.

Step #4: shock treatment:

A large amount of chlorine (Sodium Dichlor) or a non-chlorine shock is used to shock a spa (potassium monopersulfate or MPS).

This treatment has several goals, one of which is to break down organic waste pollutants that create odor and murky water. Water clarity and purity are frequently recovered after treatment.

You can shock the water several times to make sure that all traces of algae are killed, and there is nothing left to turn the hot tub water green.

Step #5: Clean the hot tub cover:

The tub cover also needs careful cleaning.

Consider your hot tub cover to be the lid of a boiling pot on the stove. It’ll be gathering condensation from the steam, as well as any algae that may be present in the water.

Spray the underside of the cover gently to remove any hot tub chemicals that may have gotten on it. When the cover is dry, flip it over and wash away any leaves, grass, or other debris with the hose.

To avoid harming the cover, make sure the water pressure is mild.

Spray the cover with a vinyl cleaning or a moderate vinegar and water solution, as recommended by the hot tub cover maker. Bleach, alcohol, and household detergents all erode at the UV protection on your cover.

Step #6: Test the water:

When all the necessary cleaning is over, test your hot tub water to know the chemical balance. If additional sanitizers are needed, add them to the desired portion.

Testing the water regularly is the best way to avoid any upcoming threat of algae.

What if the water turns yellow?

Not always green hot tub water is the problem, water

The yellow color of hot tub water is the yellow algae that appear in the water.

Yellow Algae is a type of algae that can be found in the ocean. Green algae that are resistant to chlorine and other sanitizers appear as yellow or mustard algae. Yellow algae, unlike green algae, cling to surfaces like the pool’s walls and bottom, as well as other things like pool lighting, ladders, and filters.

If a yellow alga occupies the water, remove the cover for a long time as it flourishes in dark places. To treat water, an ample dose of chlorine can work fine. The chlorine shock will re-balance the water.


What if hot tub water turns pink?

Surprisingly, it’s not an alga, but rather a type of bacterium. It does, however, have algae-like properties.

Pink is a color that isn’t seen very often in spa water. Pink algae, except for highly established colonies, will not turn the spa water pink.

Pink algae are treated in the same way as white mold is. You can get rid of it by delivering a powerful shock to it (over 30 ppm).

To clean the lines and crevices, use an enzymatic purge product. Before refilling the spa, make sure to change the filter and soak all spa equipment in a strong bleach solution.

Other colors:

Not only the hot tub water turns green, yellow, or pink; but the list is long.

The algae, metal content, and other contaminations cause many variations in hot tub watercolor. If you notice a minute change in watercolor; never ignore it and exterminate the root cause as soon as possible.

Bottom line:

You will require a modest amount of time and effort, and will most likely include weekly water testing and adjustments, monthly filter cleaning, and draining and replenishing the water a few times a year or according to your water care system’s recommendations. Contaminants like algae, mold, and mildew won’t be able to sprout or flourish if you keep your hot tub clean and well-maintained.


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