TA turned Red

treyragno

Well-known member
Oct 21, 2017
60
Corpus Christi, TX, USA
Pool Size
13865
Surface
Plaster
Chlorine
Liquid Chlorine
Your chlorine additions can give you an idea but liquid Chlorine degrades in potency so using acid/ph to gauge results generally has less variables. Also, the tub consumes fc around the clock so if you want to verify your dose do it 10 -15 minutes or so afterwards - not tomorrow.

Is much FC used when the cover is on? I know UV consumes FC and I was under impression of a cover on hot tub is used, the dissipation rate is very slow.
 

mgtfp

Silver Supporter
Bronze Supporter
Mar 5, 2020
2,007
Melbourne, Australia
Pool Size
66000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Astral Viron V35
I have a feeling your actual volume may be less than you think. A smidge off in a big pool isn’t a big deal but in a spa 50 gallons is a large percentage of the volume. For instance, my mfg. listed spa volume is 250 gal. For dosing & poolmath I use 200 gallons & it’s always right on the $$ with my results.

I don't have a spa, and was always wondering how you guys with spas measure those minute amounts of acid? Do you use teaspoon measures?
 

Mdragger88

Bronze Supporter
TFP Guide
Jun 1, 2018
9,180
Hernando, Ms
Pool Size
26000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Intex Krystal Clear
Is much FC used when the cover is on? I know UV consumes FC and I was under impression of a cover on hot tub is used, the dissipation rate is very slow.
Its basically a bathtub used by multiple people In which you continuously use the same water- there is always a standby fc demand. This is why if your fc falls below minimum for even a short time things can go south fast. Uv isn’t your enemy in a covered tub- nasties are.
 

Mdragger88

Bronze Supporter
TFP Guide
Jun 1, 2018
9,180
Hernando, Ms
Pool Size
26000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Intex Krystal Clear
Pro tip*
in a pinch steal the baking soda from the fridge/pantry- she’ll really love that (or maybe think you’re crazy)😁

The first time I came in the house rifling through the laundry area to get some borax & started putting it in the pool my husband thought I had lost my mind. He still probably thinks me & “my internet friends” are crazy. When people ask about the pool/hot tub , he tells them “I don’t really know much about it, she just pours bleach in there cuz she read it on the internet or something but it always looks nice 🤷‍♂️” 🤣😂
 
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