What is THIS!

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Xuna

Xuna

Gold Supporter
Jun 19, 2021
41
Warren Ohio
Pool Size
31000
Surface
Vinyl
Chlorine
Liquid Chlorine
65991BC7-F3B6-4A85-A308-4383E6C80D65.jpeg
Can anyone identify what this gray sludge may be? My ex-pool store told me it was phosphates residue from when I used a chemical to get rid of phosphates. I was told phosphates was the reason why I couldn't hold chlorine when I opened and cloudy water. The phosphates were cleared up but I dumped over 80 bags of Burnout 73 per their instructions over 2 weeks for the cloudy water. With TFP help I am on my way to a clear, balanced pool but still fighting this sludge. I am constantly running the pool vac. I tried hand vacuuming but didn't have enough suction through my skimmer baskets. I think this stuff is the reason I am still not crystal clear in the deep end of the pool.
 
PoolGate said:
Vacuum filter basket?
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Yes. I have a Utopia pool where the pump and filter were in the cement right next to the pool. The pump and filter have been replaced and are located near the house. I have 2 skimmer baskets under the smaller cover. This is where I would hook up the vac. The larger side was where the pump was located. They no longer make this type of pool.
 

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Does the residue fizz up if you drop any muriatic acid of vinegar on it? 80 bags of Burnout is a lot of calcium hypochlorite! It added 160ppm of calcium to whatever calcium you already had in the pool. Could you post your latest set of test results?
 
zea3 said:
Does the residue fizz up if you drop any muriatic acid of vinegar on it? 80 bags of Burnout is a lot of calcium hypochlorite! It added 160ppm of calcium to whatever calcium you already had in the pool. Could you post your latest set of test results?
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The next time I clean my vac I will put the acid on it and let you know.

Today's results
FC 2.5
TA 120
PH 7.2
CYA 40

using Pool Math to make adjustments
 
YippeeSkippy said:
What us a Utopia pool? Can you show us a pic of what is under that big square cover?? Why did you change from sand to glass?
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Here is a picture of the skimmers. The larger side is difficult to lift up by myself, but it was the space for the pump. Many times, even with a sump pump, this space would flood and would kill the motor.

Here is a link for the description. I was told they went out of business by my pool company.

I changed from sand to glass because it was recommended by my pool company. They told me I wouldn't have to replace the glass.
YippeeSkippy said:
What us a Utopia pool? Can you show us a pic of what is under that big square cover?? Why did you change from sand to glass?
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Keep the pH in the 7's. That will handle the TA. But no need to raise the pH if in the 7's. And if pH is ever low, use Borax. It does not add much TA.

Xuna said:
They told me I wouldn't have to replace the glass.
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You never have to change sand either.
 
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