Couple Chlorine Questions

[ThinkPad]

Here are some questions I've been wondering, but can't find an answer to:

1. Pool servicemen visit pools weekly, right? How do they keep the pool from going green without adding chlorine daily?
2. In the TF-100, it comes with an OTO along with the FAS-DPD. How often do you test with the FAS-DPD?

 

[RobbieH]

Pool guys usually dump puck(s) in the skimmer. They don't care if your CYA goes sky high.

I test with FAS/DPD about once per week.

 

[CeeElGee]

Here are some questions I've been wondering, but can't find an answer to:

1. Pool servicemen visit pools weekly, right? How do they keep the pool from going green without adding chlorine daily?
2. In the TF-100, it comes with an OTO along with the FAS-DPD. How often do you test with the FAS-DPD?

In reverse order:

2. Daily -- I rarely use the OTO that comes alongside the pH test. Not very accurate or easy to read.

1. Magic beans

 

[26venus]

The pucks will keep the pool from getting green. As long as you're willing to keep increasing the amount you drop in

When I first started caring for my pool using the TFP method I tested with FAS-DPD every day or every other day. This was in effort to understand exactly what my pool demanded. After the first season I could see obvious patterns depending on usage, weather, solar cover on or off, etc. Now I know my pool well enough to only test once a week or less using the FAS-DPD.

 

[ThinkPad]

So no FAS every day? That's probably why the TF-100 came with an OTO, for everyday testing. I was thinking about doing FAS-DPD weekly, and OTO daily, but I may not even do daily tests.

Good to hear what others are doing.

 

[26venus]

I should add that I maintain a CYA level of 30 which requires a chlorine level within the range of the OTO tester. If your CYA is at a level that requires a chlorine level higher than 5 it would be wise to test with the FAS-DPD more often than weekly

 

[JVTrain]

Operating with CYA of 30-50 it's pretty easy with the OTO for daily testing. If it's 5 or "more yellow" no need to add. If it's less yellow than 5 it's a ballpark of whether it's 3 or 3.5 or 4 so I'll bump it up 2-3 FC.

Saturday is FAS-DPD day.

 

[ThinkPad]

I should add that I maintain a CYA level of 30 which requires a chlorine level within the range of the OTO tester. If your CYA is at a level that requires a chlorine level higher than 5 it would be wise to test with the FAS-DPD more often than weekly

You can tell by how dark of a yellow it is. I can usually tell when it is 6 or 7 ppm.

 

[tim5055]

I have never used the OTO chlorine test due to my sky high CYA and stupid amounts of FC I had to keep. I've finally beaten the CYA down to a level that I can almost use the OTO test, but now the Sample Sizer and SpeedStir Magnetic Stirrer are so fun to use I just end up doing the FAS/DPD. Now, I admit that with my Stenner pump I generally only test every other day.

As other have said, most pool companies don't understand or care about your CYA level.

 

[Suley]

I find it hard to match colors and much easier to determine when the pink disappears. So I hardly ever use the OTO test.

 

[timerguy]

Yup! Me too!! Ditto the SpeedStir!!