Variation in Chlorine drop test results (TF-100 kit)

abradleydvm

Bronze Supporter
Jul 28, 2019
54
Denison , tx
I have been testing frequently while transitioning from tabs to bleach . I am getting variation in results .... yesterday 7.5. , 10.5,9,9.5 and today I did two 5.5 and 7 .... I use a healing scoop but some are bigger than others ... does this affect the results ? I used same spot in pool but different samples on each
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
22,470
Laughlin, NV
The R0870 powder amount does not matter, as long as you add enough. If the sample turns pink, you used enough.

More likely, is droplet size of the R0871 reagent.

Bottle vertical, do not squeeze the bottle. Droplets should form and fall of the end of the tip once every second or so.
 

frogabog

Gold Supporter
LifeTime Supporter
Jul 16, 2010
2,833
Portland, Oregon
You say, transitioning.

Either you are transitioning with tabs and still have the feeder on or filled with tabs still, or turned off the feeder. removed all tabs. and are on TFP.

Please clarify.
 
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abradleydvm

Bronze Supporter
Jul 28, 2019
54
Denison , tx
You say, transitioning.

Either you are transitioning with tabs and still have the feeder on or filled with tabs still, or turned off the feeder. removed all tabs. and are on TFP.

Please clarify.
Feeder is emptied ... no tabs .... no graular shock ... only liquid chlorine ... I started last week and I am keeping my FCL levels between target and minimum for my CYA . I am testing twice daily just to get an idea of how much chlorine loss I have daily . I am adding acid to decrease my ph to 7.4 as it rises to 7.8 so as to get my TA down . My CYA came down this past week some already but I bought a sump pump and plan to do a water transfer in the next couple of weeks . I AM A TFP BELIEVER ... ALL IN 👍🏻👏🏻👍🏻
 

RodRamos

Well-known member
Jul 24, 2019
118
Trinity, Florida
Feeder is emptied ... no tabs .... no graular shock ... only liquid chlorine ... I started last week and I am keeping my FCL levels between target and minimum for my CYA . I am testing twice daily just to get an idea of how much chlorine loss I have daily . I am adding acid to decrease my ph to 7.4 as it rises to 7.8 so as to get my TA down . My CYA came down this past week some already but I bought a sump pump and plan to do a water transfer in the next couple of weeks . I AM A TFP BELIEVER ... ALL IN 👍🏻👏🏻👍🏻
I'm with you on this one, TFP all the way. My water never looked clearer. When I got my first pool I went to the store and spent about $300. "Oh yeah, you're going to need this" they said and handed me a chlorine tab floatie and a bucket of tabs. I used to fill it religiously and although my pool had it's good days where the water was crystal clear, the smell of chlorine, cost of chemical upkeep and struggle was too much. TFP is so much easier and cheaper it's hard to believe. But the best thing is how empowering it is to be able to troubleshoot and correct issues yourself.
 

beautifulpool

Well-known member
Jun 2, 2019
115
North TX
I'm with you on this one, TFP all the way. My water never looked clearer. When I got my first pool I went to the store and spent about $300. "Oh yeah, you're going to need this" they said and handed me a chlorine tab floatie and a bucket of tabs. I used to fill it religiously and although my pool had it's good days where the water was crystal clear, the smell of chlorine, cost of chemical upkeep and struggle was too much. TFP is so much easier and cheaper it's hard to believe. But the best thing is how empowering it is to be able to troubleshoot and correct issues yourself.
Yep! Amen