Hi from Texas

Try water and a LITTLE soap, no? Then try rubbing alcohol, then try ammonia/water.

Little toothbrush may help...

Just scrubbed with soapy water. It lightened a bit but did not come off. I have a touch up kit and Koolcote is supposed to come out to touch up some cracks so may have to have them do this too. Did not expect this to happen. Think I should try rubbing alcohol or ammonia or just touch them up?
 
I’ll try in a bit. Not sure if this is listed down as a “caution / beware” in a testing thread somewhere but it probably should be. I assumed testing in the outdoor table next to the pool would be fine. I don’t recall spilling anything but we did just have rain. It is possible it washed some reagent off onto the patio. I am very angry with myself.
 
Try the alcohol and if that doesn't work, try a dilute ammonia water solution. Neither will damage the kookdeck.

So I just tried rubbing alcohol and was surprised to see it work, and work well. Then I put my finger on and it came back covered in white paint. Presumably it’s stripping the paint away. Not good at all.
 
So I just tried rubbing alcohol and was surprised to see it work, and work well. Then I put my finger on and it came back covered in white paint. Presumably it’s stripping the paint away. Not good at all.
With ANY cleaning agent always try small amounts in a small area in an inconspicuous spot.
 
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With ANY cleaning agent always try a small area in an inconspicuous spot, with small
With ANY cleaning agent always try small amounts in a small area in an inconspicuous spot.

I didn’t feel it would be wise to try it on a clean area versus where one of the small spots / stains is. Additionally I’d just been told that neither would damage the kooldeck. Anyway unsure what happened, it helped a bit but I stopped and rinsed everything away after I noticed white paint being removed. Unsure how to proceed now.
 

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Not to my knowledge. I’m sure maybe I dripped some since I’ve been testing daily. It’s right over the area where I sit to test and the only thing I can think of.
Ok then i don't think it's reagents/sample mix. I test exclusively in my test kit case and after 3 seasons have a couple of drip stains on my stirring device. No way that many drops missed the vial and accidentally fell through the table slats in a couple days. I'm also big and clumsy and you're probably way more fine motor skilled than me. :ROFLMAO:

Nonetheless, I'm sad for you it's stained for now, however it happened.
 
Ok then i don't think it's reagents/sample mix. I test exclusively in my test kit case and after 3 seasons have a couple of drip stains on my stirring device. No way that many drops missed the vial and accidentally fell through the table slats in a couple days. I'm also big and clumsy and you're probably way more fine motor skilled than me. :ROFLMAO:

Nonetheless, I'm sad for you it's stained for now, however it happened.

It is almost certainly reagent. That is the only activity that has occurred in that specific area. It is a table with 4 chairs that has been used only exclusively so far for testing (it is all brand new). The table has slats and the spots are directly above the only chair which I sit it to test. My guess is drippings/spillage from one of the 3 testing tubes. They’re very dark and one looked almost purple so I’m thinking maybe FASD powder or splashes from a PH test. I have discontinued testing there and no more spots have appeared.
 
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Really struggling to get these PH and TA numbers down. Suppose I’ll do another MA treatment today (last one brought it down to 7.6 but only for a day, at most). Also, I tested my CYA for the first time in a week or so and seems it may have risen a bit, though there may have been one or two days with the last remaining trichlor tablet in the feeder. Also, I find it very difficult to perform the CYA test. I know we are supposed to just briefly glance but I trick myself into looking a second longer and spotting the dot. Results attached.
 

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Really struggling to get these PH and TA numbers down.
TA takes some time. The Ph rise will relax a little once the TA settles where it wants to be.
I know we are supposed to just briefly glance but I trick myself into looking a second longer and spotting the dot.
Yeah. Your brain lies to you 24/7. Wanna see ? Look at your nose. It was there the whole time I typed this. Probably even longer than that.
Also, I tested my CYA for the first time in a week or so and seems it may have risen a bit, though there may have been one or two days with the last remaining trichlor tablet in the feeder
Perhaps. Or the subjectivity, typical variance and/or lighting skewed it a little. Relatively stable is great, so long as it doesn't go sideways.
 
TA takes some time. The Ph rise will relax a little once the TA settles where it wants to be.

Yeah. Your brain lies to you 24/7. Wanna see ? Look at your nose. It was there the whole time I typed this. Probably even longer than that.

Perhaps. Or the subjectivity, typical variance and/or lighting skewed it a little. Relatively stable is great, so long as it doesn't go sideways.
How long does it take for PH and TA to "settle"? It's been in since ~November / December of 2024.
 
Because of your high TA fill water, and being in an arid section of the country with high evaporation, managing pH is just going to be a thing.

You kinda have two choices.
Don't worry about it and just manage pH. There is no impact of high TA other than it causes pH rise.
Or
You can actively manage TA down to a manageable level, and deal with the little bit of TA added by the fill water. Link-->Lowering Total Alkalinity (TA) Quickly with the Acid Aeration Method
 
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