How do I get rid of these light brown spots in my pool?

Luv2model2007

Member
May 16, 2020
6
Charlotte, NC
New pool owner here and question about what I think is mustard algae.
so long story short, when we opened our pool this spring, due to the large of amount of rain and leaves on top of the pool cover whenever we took off the cover the entire pool was a dirty brown cloudy mess. After turning on our pool pump and filter and balancing out all the chemicals or water is now crystal clear, however we are still having a problem with this brown lightweight sediment at the bottom of the pool. I have tried triple shocking the pool and vacuuming to waste. I have also tried raising the FAC level to 5 -10 ppm while using yellowtrine. After doing both of these things and brushing the pool I come back the next morning and the brown spots are back on the bottom of the pool. Nothing on the walls just scattered across the bottom of the pool. When I take the brush about 4 inches from the brown spots and I shake the brush without even touching the brown spots they poof into a light brown cloud. Does anybody have any idea what this could be?
 

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mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
43,966
Laughlin, NV
Welcome to the forum!
Sadly, Yellowtrine is Sodium Bromide. Depending on how much you have added to the pool, your pool could now be a Bromine pool. Which will make management of it difficult.
Let us know how much of that product you have used.
I suggest you read ABC's of Pool Water Chemistry.
 

Luv2model2007

Member
May 16, 2020
6
Charlotte, NC
Welcome to the forum!
Sadly, Yellowtrine is Sodium Bromide. Depending on how much you have added to the pool, your pool could now be a Bromine pool. Which will make management of it difficult.
Let us know how much of that product you have used.
I suggest you read ABC's of Pool Water Chemistry.

Yea I used 2 gallons of liquid chlorine as well so it would not eat away all my chlorine.
Any advice on the brown spots though ?
 

Luv2model2007

Member
May 16, 2020
6
Charlotte, NC
Here are some better pictures
 

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mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
43,966
Laughlin, NV
If it is dead, it was recently alive.
Either way, you need to follow the SLAM Process.

If that is all of the yellow stuff you have added, your bromide levels should be low enough to not significantly effect the chemistry management of your pool water.
 
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