Killing swimming pool yellow algae can be a problem. Proper treatment, maintenance, chemical help, and algaecide for your regular and saltwater pool.
You can learn to get rid of and control of these swimming pool problems by using pool tips to have the best pool water quality.
Proper pool water maintenance and using the best pool tips are essential in fighting any kind of swimming pool algae.
Mustard deposits are usually found on the walls, primarily on the shady side of the pool.
Unlike brown algae and black algae, this mustard swimming pool algae can be easily brushed away, but it will return without the right kind of swimming pool chlorine and a good pool shock.
Before trying to remove your pool algae problem, bring the pH, alkalinity, and hardness into line.
I suggest using liquid pool chlorine instead of granular chlorine, a.k.a. Calcium Hypochlorite, to shock your pool.
Brush, and I mean really brush, the bottom, sides, and steps to loosen any yellow algae that may be adhering to the surface.
Purchase a high quality leaf rake, (not those simple blue square skimmers) and scoop out as much debris from the bottom and top of the pool as you can. If you're able, make sure the bottom drain is clear and free of debris.
Continuously run your filter.
There's too much information that will fit on one page. Click on the eBooks above to get the complete run-down of all you need to have the best looking pool.
Watch that the pool’s water level does not get below a minimum of 2” from the bottom of the skimmer. You want to get rid of the dead algae.
Super-chlorinate, or shock, the pool by maintaining the FC level to 12 - 15ppm.
If your pool chlorine is 1.0ppm then raise it to 12ppm or slightly above. You must do this in order to kill the algae. Don’t skimp on the pool shock.
You must reach that 12ppm or above because if you don’t it’s just wasting time and money. Coming close won’t cut it.
Get a good water testing kit and learn how to use it. Test strips will NEVER give you the chemical numbers your need. Remember that "RED" is not a substitute for a FC chemical number.
To super-chlorinate you must do this all at once, not over a few hours or days. If you're running your pool chlorine at 1.0ppm, then bring it up to 12ppm.
You’ll notice this is working when your yellow to a white or grayish. Also, there might be be dead algae on the bottom of the pool. This can be filtered out through vacuuming the bottom of the pool. Keep brushing and vacuuming to rid the pool and any residual yellow algae and remember to keep filtering and back-washing to get rid of the swimming pool algae.
If you have a DE filter, you'll need to re-coat or recharge the grids with each backwash.
If you have a cartridge filter remember to take the filter out and clean it once per day with a regular garden hose, never a power washer. Brush and filter then brush and filter and then after you do those it’s time to brush and filter some more.
Remember, when you have a swimming pool algae problem, there is no quick fix. It will take time, effort, and patience to clear up your pool.
When your swimming pool chlorine is down to 1.0ppm-3.0ppm the pool will be safe to swim in once again. At this point you can use a clarifier to help with the filtration.
Obviously you would NEVER allow anyone to swim in the pool until the swimming pool algae and/or mustard deposits are gone and the water has cleared up.
Treating algae can be a little tricky. It's one of those kinds of algae that seem very harmless because it can easily be brushed away.
I like calling it "ghost algae" because it disappear easily by brushing, but then it comes back the next morning and you say, "Where did that come from?"
Don't let this fool you, because it will come back again and again unless you take the right steps to rid your pool of this pain once and for all.
After you shock your pool you can use a good Yellow Algae treatment pool algaecide.
Go To:Swimming Pool Care > Pool Algae > Yellow Algae
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We just got our readings. It says that the Free Chlorine and Total Chlorine is below the recommended values but the Combined Chlorine is above the recommended
I have a dark brown iron stain from a rusty bolt that the kids threw in my cement pool.
We added muriatic acid to our pool to lower the swimming pool pH level. I need to know how long after we added it to swim. Thanks for your question James