Tap fill water test

zmike

Active member
May 11, 2020
25
Southeast Michigan
Upgraded my oto kit to tf-100

Getting ready to fill pool soon, plus try out new test kit

test water from the tap
FC - .5
PH - 7.2
TA - 80
CH - 80
CC no test
CYA no test

From what I can tell, ph seems a little low, excluding FC, does everything else seem good?

Thanks,
Mike
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
24,678
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60

YippeeSkippy

Mod Squad
LifeTime Supporter
Jan 17, 2012
15,953
Evans, Georgia
Looks pretty good actually. Get some liquid chlorine and CYA stablilzer in there right off. TA is fne, pH acceptable too. You don't need to add calcium because you're getting a vinyl lined pool. Vinyl doesn't need calcium.

Welcome to TFP!

Maddie :flower:
 

Richard320

TFP Expert
LifeTime Supporter
Jan 6, 2010
23,932
San Dimas, CA (LA County)
Those numbers are great. By the time the pool is full, your pH may be higher, so having it at the bottom of safe now is ideal.

Fill it up, get the pump running and check leaks, test pH, fix if needed (probably not in your caee), add CYA in the sock, add bleach, add kids. Maybe an hour? You don't need to wait for the CYA to fully dissolve.
 

jobondur

Well-known member
Dec 13, 2009
182
Virginia Beach, VA
You may also want to test for metals. I was noticing metal stains on my liner and tested my fill water which is well water (I'm on city water but have a well for irrigation). It tested positive for metals and when I got a new liner I decided to fill with city water. I haven't seen any stains since.

All the stuff you already tested for can be relatively easily corrected with methods/chemicals outlined on this site. But metals can't really be gotten out of the water once they're in, they can just be neutralized - and you'll have to add chemicals to neutralize them on a regular/indefinite basis. Chances are you're good - but this is another test you MAY want to run.
 

Nathan J

Member
May 19, 2020
6
Northwest Arkansas
Similar question. I have a gunite pool. I'm currently doing a partial empty due to high CYA (120). My hardness was at 110. Tested the tap water and the hardness is 80. Planning on adding calcium chloride anyway. Would it be a good idea to just plan on adding some calcium any time I have to add water?
 

Richard320

TFP Expert
LifeTime Supporter
Jan 6, 2010
23,932
San Dimas, CA (LA County)
Similar question. I have a gunite pool. I'm currently doing a partial empty due to high CYA (120). My hardness was at 110. Tested the tap water and the hardness is 80. Planning on adding calcium chloride anyway. Would it be a good idea to just plan on adding some calcium any time I have to add water?
No. Water evaporates. Calcium stays behind. If you're topping off due to evaporation, you're actually going to raise CH.

Let's say you're at 500 CH totally full and you lose 5% due to evaporation. Your CH is now 526. Add pure water back, and it goes back to 500. Add water with 80 CH in it, it's 530.

But testing will tell you when you need to add more. You don't need a schedule..
 

zmike

Active member
May 11, 2020
25
Southeast Michigan
So, I helped my neighbor set up a new pool, water tested the same as mine.

Here are the numbers so far.
OTO chlorine turned orange (might have put a little too much in at first)
PH 7.6 - 7.7? (color did not match, above or below, so that is my guess)
Chlorine 9.5 (started at 15)
CC 0
TA 80
CYA 30 (2 days latter added for 40, still need to do test to make sure)
Water temp at fill, was 55, and now at 68

tf-100 is a nice kit, still a little slow doing the tests, but seems easy so far.

Soon as I get my new filter next week, I'm pulling off the cover, and filling the
the pool, its about 1/2 full. 10 yr Summer Waves pool, always left up during the winter, and still going strong.

Mike
 

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Richard320

TFP Expert
LifeTime Supporter
Jan 6, 2010
23,932
San Dimas, CA (LA County)
You don't need to use the OTO test if you're using the FAS-DPD test. It's not as accurate and it will just confuse things. It can be useful as a sanity check, but otherwise I think it just comes with the TF100 because they don't sell that pH block without a chlorine test
 

zmike

Active member
May 11, 2020
25
Southeast Michigan
I was showing my neighbor how to use the oto test, they never had a pool before. I'm teaching them, how to use it, just thought it was funny when it went orange, I thought it would have gone clear.

I have had pools as a kid & an adult, I kind of got it most of it wright here and there, but up till this year, from TFP site makes me understand why I did most of it wright, I've always added cya and liquid chlorine, never used the pucks. I get cya and chlorine levels now. Only time my pool turns green is when I was lazy and did not keep chlorine levels up.

I have my neighbors, learning from this site also.

Thank you, for your input
Mike

PS
The poolmath app is really cool, wish I had found this site years ago
 
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