Is there ever a reason to drain pool if chemicals are fine?

texaspool89

Member
May 17, 2021
14
Texas
Pool Size
13500
Surface
Plaster
Chlorine
Liquid Chlorine
My dad has had his pool for years and keeps saying the water should be “replaced” but the chemicals are all perfectly balanced. Is there any reason to drain the whole pool if nothing is wrong? I assume it naturally is replaced with hose and rain as we replace the evaporated water each week.
 
89,

Nope.... There is just no truth to the idea that water "goes bad" and has to be replaced..

Obviously, you might have to replace some or all of the water to fix a chemical issue, like really high CYA or CH, but that would not be the norm.

Thanks,

Jim R.
 
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My dad has had his pool for years and keeps saying the water should be “replaced” but the chemicals are all perfectly balanced. Is there any reason to drain the whole pool if nothing is wrong? I assume it naturally is replaced with hose and rain as we replace the evaporated water each week.
Sometimes a pool store tech will say the water is “bad” or may be “chlorine lock” - their term - not mine. It is mainly because the CYA is so high that the only way to get back into balance is to drain and replace water to reduce the CYA.
If your test showed CYA is 80 or less then you are fine.
 
Post a full set of test results from one of the recommended test kits.

FC
CC
pH
TA
CH
CYA
Salt (if a SWG pool)
Water temp

Are the test results within TFP guidelines?
 
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The FC and CC numbers do not make sense. How did you test the pool water chemistry?
 
Is your CC 1.7 or is that TC (total chlorine)? TC=FC+CC
If your CC is actually 1.7 then that is not good.
Also, if your are following TFP methodology your FC is way low for CYA of 70.
Your TA is also on the high side.
So by TFP standards, the pool is not “perfectly balanced “.
Look at
FC/CYA Levels
Sorry I read it wrong. I meant to say TC was 1.7 so CC is 0.2. But either way the TA and FC are simple to solve I would think..we just got back from week vacation so needs a little care.
 
Sorry I read it wrong. I meant to say TC was 1.7 so CC is 0.2. But either way the TA and FC are simple to solve I would think..we just got back from week vacation so needs a little care.
Do you follow the TFP methodology? You stated this was your dad’s pool, do you care for it daily or are you able to care for it?
Let us know what test kit you use.
We are here to help - just need to understand the way forward and what support is needed.
You may want to obtain the PoolMath app to track your test data and chemical additions.
This will help keep it in the ranges recommended by TFP.
 

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