Foam In Hot Tub
Soft Water / Foaming
Foamy Bubbles in Spa
Slime In Spa
Thick Foam In Spa
Foam In Hot Tub
I am experiencing milky yellow-white scummy foam bubbles in our hot
tub. The hot tub is about 425 gals, has an ozonator that runs separate
from the circulation pump (it runs 24x7) and keep the water at ~98
degrees. The spa was installed 3 months ago. Shortly after filling
it up and bringing it up to cozy temperature, we were 'sold' into
using an oil-based aromatic spa scent. We used a small amount - about
2 oz - and enjoyed the fragrance and the effect on our skin. After
one month or so we started to see the scummy bubbles. They are not
everywhere, but slowly gather in the corners of the tub where the
current takes them.
Since then, I have changed the water twice and the filter once. I
have applied an algaecide (30%) and keep the pH, bromide and alkalinity
in check. I did notice a buildup of the scum deep in the pleats of
the old filter. But the scum still comes back.
Is this a buildup of oils? Algae?
There could be several factors: body oils, algaecide (depending upon
the type), and cosmetic residues.
I suggest that you drain and clean the unit. After refilling operate
in the normal manner. An algaecide should not be required. Some products
cause foaming and others can act as coagulants and cause deposits.
Their use should not be necessary in your case -- avoid their use!
Discontinue any use of oil based scents.
The Scentsations line of spa fragrances are completely soluble and
Water / Foaming
We live in an area of Canada that has very soft water. We recently
purchased a outdoor hot tub in November '98 and since then have changed
the water twice because of foam.
Our water hardness is below 1/2 grain and we have done everything
as instructed in adding proper chemicals etc. Now here we are two
days into new water and chemicals and the bubbles have started. We
also wash our suits in vinegar and water. Do you have any suggestions?
Some foaming is inevitable.
Foaming is caused by the reaction of the body oils and the natural
alkalinity of the water -- this forms a soap and can lead to foaming.
Very soft water will make this worse.
What you need to do is add a Product such as Spa Clear Liquid Calcium
Booster and raise the hardness level to 150-200 PPM (9-11 grains).
This should reduce the problem.
Spa Clear Foam Buster will help control occasional foaming.
Foamy Bubbles in Spa
I have a new spa, and after a few days it began to develop a lot of
bubbles. Not air bubbles, but foamy bubbles. Is this due to soap residue
remaining in the clothes that are being worn in the spa? What can
be done to remove them?
Soap residues are always a possible cause of foaming, but are unlikely.
The presence of body and cosmetic oils, in conjunction with the natural
alkalinity of the spa water, can be converted into soaps. This in
turn will lead to foaming.
Proper spa sanitation requires that the water be defoamed regularly.
The regular use of SUN Defoamer or Spa Clear Foam Buster will defoam
the surface. Only a small amount should be used as directed. More
is not necessarily better.
Soft water is more prone to this problem. Have the spa water tested
for calcium hardness. If the calcium level is low boost to 150-200
PPM. This will help reduce the foaming tendencies.
I just bought a hot tub and have had problems figuring out the water.
After I filled it, it was real clear. I added the metal magic to get
rid of metals and then I added bromine. I did a dip test and found
out that the Alkaline and PH were high. I was told to add Muriatic
acid to lower it. It did work then the water got greenish, I was told
to add more bromine. Then the water got greenish and cloudy. I was
told to put more metal magic in it. Then the water looked awful. I
decided to drain it. I did drain it and now I have fairly clear water
except the inside of the tub is slippery. When I take a sponge and
wipe it it comes off and it appears to be clear slime. Can you tell
me what it is. Also in the new water all I put in was metal magic
and bromine. The alkaline seems good but the ph seems a little high
yet and the bromine seems low even though I put in 5 cubes. Do you
have any answers.
The slime that you are describing is probably due to algae or bacteria.
The fact that you are adding bromine and not getting a high reading,
more or less confirms this.
Try adding Spa Clear OXY-SHOCK or Sun for the Spas SUN BRITE. This
is quick dissolving and will boost the bromine level. Raise the level
to 5-10 PPM and keep it elevated until all slime disappears and you
are able to maintain a bromine reading of at least 5 PPM for an overnight
period. Make sure the pH is 7.2-7.8. Run filter continuously until
the conditions improve.
The condition was probably cause by inadequate sanitation and/or high
bather load. Always try and keep the bromine level in the 3-5 PPM
range and if necessary add a quick dissolving product to boost the
Thick Foam In Spa
When we circulate all are water through our hot tub (by completely
closing the valves to the attached pool) our hot tub built up a thick
white foam. What causes this? We do not believe it is a soap or oil
problem. We just opened the pool last week, there has been no swimmers
in it yet.
It seems certain to me that at some recent time in the past you added
an algaecide or winterizer that contained dimethyl benzyl ammonium
chloride or other similar sounding compounds. These products have
a tendency to foam. The air and water jets of the spa will cause excessive
Discontinue use of all such algaecides. Try adding a product such
as Spa Clear Foam Buster. It is very effective as a defoamer.
There are algaecides such as Swim-Free Black Algaecide, Swim-Free
Non-Foaming Copper Algaecide, SUN Algaecide 60 or SUN Copper Algaecide
that do not cause foaming in pools or spas.