mguzzy
Gold Supporter
There are 10 kind of people in the world, those that understand binary and those that don't
Time for my first SLAM? Now with Pictures!
- Thread starter TheDeuce
- Start date
You know that Jump Around song from the 1990’s? They were singing about my FC levels. OTCL last night - inexplicable jump to 33 ppm. CC of 0.5. This morning? 26 and 1.5 respectively. Full disclosure: the morning sample had a couple of hours of AM sun on it. Solar cover in place though.
I’m continuing the SLAM but was wondering what effect the AM sun had on my morning reading.
m.
I’m continuing the SLAM but was wondering what effect the AM sun had on my morning reading.
m.
mguzzy
Gold Supporter
I suspect the solar cover had a greater impact... it prevents the CO2 from out gassing.. I bet that is the source of the high CC.. and a 7 ppm drop in FC makes me go hmmm. I think I would do it again without the cover tonight.
- Jun 8, 2019
- 4,581
- Pool Size
- 20000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
You want the sun on the pool during the SLAM to burn off any CCs.
@Leebo Where is the PoolMath app option for metric?
@Leebo Where is the PoolMath app option for metric?
- Jun 8, 2019
- 4,581
- Pool Size
- 20000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Leebo got me the info. Here’s where to change the measurements to metric. 
In settings under Pool Volume.
In settings under Pool Volume.
Did Pool School mention not using the solar cover during SLAM? If it's there I missed it, if not that might be a good edit suggestion.
At least tonight's overnight lows aren't going into single digits so I shouldn't lose too much heat...
High of 30 degrees Monday!
m.
At least tonight's overnight lows aren't going into single digits so I shouldn't lose too much heat...
High of 30 degrees Monday!
m.
Leebo got me the info. Here’s where to change the measurements to metric.
View attachment 146602
Logical place.
m.
- Jun 8, 2019
- 4,581
- Pool Size
- 20000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Putting it on at night shouldn’t make much difference. Just want some sun on it during the day.
mguzzy
Gold Supporter
Yeah.. but that doesn't change ALL the settings to metric.. The look up tables for the SWG are locked into lbs/day , and the other fields have individual drop downs to set their units, like in the Effects of Adding, you can select gallons or liters. As well as in the temp field you can choose the F or C units in the drop down menu.Leebo got me the info. Here’s where to change the measurements to metric.
It did, however, change the units in the suggested chemical additions. Thanks!
However, for the second time, my following the suggested addition shot my FC way over target. It said I should add 13 litres of bleach to get my FC of 26.5 at 4:33 PM to get up to SLAM level. At 7 PM my FC was 45.5, CC was 1. I just took my nighttime OCLT and I'm at FC of 41.5 and CC of 1. I thought my CYA might be way lower but I did the test twice and got a 60-70. I had been using 80 for my SLAM calcs as that was what I had read pre-SLAM.
Also my pH meter is reading 8.2! I know the drop test for pH is inaccurate but are the electric meters similarly affected?
I thought I was so thoroughly prepped after reading PoolSchool. Oy.
m.
mguzzy
Gold Supporter
I probably need to see if I need to update the app. I use it on a decommissioned phone.. (in case I drop it in the pool)
No, the pH meters are not affected by high FC the way the drop test is.
- Jun 8, 2019
- 4,581
- Pool Size
- 20000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
You may be overestimating the size of your pool if chem additions always seem to overshoot.
Just came in from a late night wrap up. I'm seeing that white particulate around the light but it's pretty hard to capture in a photo. I tried anyway though, along with one shot to show where I'm at clarity wise. FWIW I used the installer spec to get my volume. Is there a better way for an irregularly shaped pool?
I probably need to see if I need to update the app. I use it on a decommissioned phone.. (in case I drop it in the pool)
No, the pH meters are not affected by high FC the way the drop test is.
Thanks so much. Since my pH meter is showing 8.2 should I be adding acid during my SLAM to bring it down?
m.
mguzzy
Gold Supporter
Nah.. just focus on keeping the FC at SLAM target. We will adjust the pH after the SLAM is completed and the FC drifts back down. There is not point in trying to juggle too many balls at once.
As you get used to adding chems to your pool you will fine tune the volume. As you notice that a particular addition didn't quite give you the result you were expecting.
As you get used to adding chems to your pool you will fine tune the volume. As you notice that a particular addition didn't quite give you the result you were expecting.
I noticed that your location shows as "OV, CA". Is that Canada or California? Reason I'm asking is that I'm planning on going Gold on TFP support and was wondering if they shipped your complimentary swag this far north and if the other discounts and credit were usable up here.
m.
One more question - is the white stuff floating in my water dead algae? I ran across this on another website:
Algae is a very simple aquatic organism that generates its growth through photosynthesis. It generally arrives in you pool on the wind or rain, or sometimes by contaminated swimming suits are pool cleaning equipment. It is not a dangerous organism in any way, but it can make your pool murky and unpleasant to swim in. Algae turns white when it dies, so it is possible that the white matter you see is simply dead algae. This is especially likely if you've recently done battle with algae through chemical treatment of the pool. Just let the debris settle to the bottom of the pool, where you can vacuum it away as part of your normal maintenance routine.
Since TFP is now the only pool website I trust I thought I'd get confirmation.
m.
Algae is a very simple aquatic organism that generates its growth through photosynthesis. It generally arrives in you pool on the wind or rain, or sometimes by contaminated swimming suits are pool cleaning equipment. It is not a dangerous organism in any way, but it can make your pool murky and unpleasant to swim in. Algae turns white when it dies, so it is possible that the white matter you see is simply dead algae. This is especially likely if you've recently done battle with algae through chemical treatment of the pool. Just let the debris settle to the bottom of the pool, where you can vacuum it away as part of your normal maintenance routine.
Since TFP is now the only pool website I trust I thought I'd get confirmation.
m.