Help Identifying Substance in Pool

[JcSparky]

Anyone have any idea what this could be in the bottom of my pool? At first I thought it was sand from my sand filter, but when I try to scoop it up it scatters like dust. Is it algae?

It vacuums up fairly easily but I haven't vacuumed for a week so that I could see what this stuff was.

 

[wjr75]

Do you have any ducks around?

 

[JcSparky]

No. Completely fenced in backyard with NO trees .. just surrounded by grass.

- - - Updated - - -

It "speckles" on my tanning deck as well through out the swimming season. But like I said, it easily vacuums up so it's not THAT huge of an issue, just a nuisance. Could it be sand even though it scatters like dust when I attempt to pick it up?

 

[JcSparky]

Here's a closer look ..

 

[borjis]

just looks like some dirt accumulation over time.

If you test for combined chlorine and it's zero you know its not algae.

Here in my region it's POLLEN TIME!

Been vacuuming it up every other day for a week.

 

[AimeeH]

Just a side note here. You can have zero combined chlorine and still have algae.

 

[borjis]

You can?

How would that be possible?

 

[AimeeH]

Absolutely you can. My pool is proof.

 

[PAGirl]

Bump your FC to above 10 and perform an OCLT. Do you brush your pool regularly? (Bottom and sides)

 

[kimkats]

Use a turkey baster and suck some up. Put a white paper towel inside a colander and and squirt it out gently. See what color it is and what it feels like. You can also allow it to dry and see what it is like then.

Kim (I think it is dirt but.....)

 

[Saturn94]

Just a side note here. You can have zero combined chlorine and still have algae.

You can?

How would that be possible?

Absolutely you can. My pool is proof.

Yep, Aimee is correct.

 

[JcSparky]

Thanks for everyone's input! Pollen does sound reasonable being in South Louisiana .. been hovering between 75 - 85 here lately. I also like the idea of sucking some of it up and putting it on a paper towel to see what I get... stay tuned!

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[pooldv]

Just a side note here. You can have zero combined chlorine and still have algae.

True that!

Do you have any ducks around?

HA! It does look like duck poo.

 

[duraleigh]

This thread is seriously lacking some current test results and nobody has asked for them.

JcSparky, can you post them up for us? Without them, everyone is just stabbing guesses.

 

[JcSparky]

Certainly .. I will do that this weekend .. between the glimpse of The Masters, of course. Thanks again!

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[JamesW]

I’m thinking possibly mustard algae.

 

[kimkats]

This thread is seriously lacking some current test results and nobody has asked for them.

JcSparky, can you post them up for us? Without them, everyone is just stabbing guesses.

DOH!!!!!!!!!! Sorry about that boss! I will do better next time.

Can you also tell us how you are testing the water please?

Kim

 

[JcSparky]

Will be testing using the TFP method .. Taylor K-2006. Hope to have results today sometime.

 

[PAGirl]

This thread is seriously lacking some current test results and nobody has asked for them.

JcSparky, can you post them up for us? Without them, everyone is just stabbing guesses.

Someone suggested an OCLT, lol.

 

[JcSparky]

Results are in. I have been running my pool pump between 11 AM and 4 PM each day for a couple of weeks now. The SWG is set to max output. My current water temperature is 75 F degrees. The pump had been running 2 hours when I started my testing around 1 PM.

FC : 2.2 (interesting so low given amount of salt and max output of SWG)
CC : 0
PH : 7.6
CYA : < 30 (dot never disappeared)
TA : 60
CH : 80
SC : 4200 ppm (optimum for my SWG) .. salt level for those asking

Fire away!