Yellow stain - not mustard Algae

Stains on the pool surfaces, pool equipment
or on the swimmers, or off-color swimming pool
water. Discolored but clear pool water.

Yellow stain - not mustard Algae

Postby robren » Sat 07 May, 2011 10:46

We thought our yellow stain around the pool just above the water level was due to guests using sun cream but now are not so so sure. We think it more likely to be the result of pollen from nearby fir trees. Shall increase chlorine as recommended. Can someone please give the trade name of the "sequestering agent/metal remover" . Thanks in anticipation -

chem geek
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Yellow stain - not mustard Algae

Postby chem geek » Sat 07 May, 2011 12:18

If the pollen is on the surface of the water as well, then you can use a skimmer sock to catch a lot of it.

As for a metal sequestrant, the most powerful are HEDP based as they are also chlorine-resistant so won't break down so quickly. See Metals in the Water and Metal Stains for more info.

Yellow stain - not mustard Algae

Postby KittyCalais » Tue 13 Sep, 2011 10:22

I found there is not magic chemical to remove any yellowing, I find most times it is just plan old dirt and scum, because the pool hasn't been brushed enough. We are all guilty of letting our automatic pool cleaners do more work then we do and lets face it, non of them work all that well. My suggestion and the only thing that I ever found that really good old fashion elbow grease. Go to the store buy about 20 Mr Clean Magic Erasers, recruit the whole family, put on your swimsuits and start scrubbing. Then put "Creepy" in the pool shed and dust off that old pool hose, vacuum and pole and start scrubbing your pool with that once a week. I know its the answer you are all dreading to here but you know its the truth....Happy scrubbing!!!! :thumbup:

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