Here is my situation.
I really try my best to maintain a sanitary pool. FC is measured everyday around 4:00pm-ish, chlorine additions are usually early evening when the sun is off the pool. My wife says I obsess with the pool.
Early last week while I was enjoying an early evening swim I thought to myself, 'the pool looks a little cloudy' (gasp).
I SLAMmed the pool earlier in the year when some local birds were using it as their restroom, meeting all 3 criteria.
http://www.troublefreepool.com/threads/99394-Gonna-SLAM-the-poop-out-of-this-pool!
The pool has been crystal clear since, up to last week when I thought it was not. I've found that when the sun get low and the pool is in the shade the water never looks as good as it does in the direct sunlight, and that is what I thought I was seeing.
Last Thursday my granddaughter says "pop- the pool floor feels a little slimy".......
Not what I wanted to hear one day before a holiday weekend that has friends and family in the pool all weekend.
I pulled the ladder to scrub it down (water from inside was clear, but no FC) and immediately rose FC to my shock level based on CYA.
Here are the testing notes from a two day SLAM. (Remember, I'm working around an active pool here):
9/3 (last CYA=40ppm)
******* Start of SLAM *******
6:30pm
FC 6.5ppm(+80oz)
Kids complained floor slimey & water hazy
CC 0.5ppm
******* Start of OCLT *******
7:30pm
FC 18.0ppm
CC 0.5ppm
9/4
6:00am
FC 16.5ppm (FAIL OCLT)(+28oz)
CC 0.0ppm
4:45pm
FC 14.0ppm (+20oz)
CC 0.5ppm
******* Start of OCLT *******
8:00pm
FC 15.5 ppm
9/5
6:30am 78F
FC 15.0ppm (-0.5ppm)
CC 0.0ppm
Water is GLASS CLEAR
******* End of OCLT *******
******* End of SLAM *******
Fast forward to last night. I'm enjoying an evening swim now that I have the pool to myself and I say, 'pool looks a little cloudy'.........
The pool is under two large trees, always dropping something in the water. I vacuum every 10-15 days, but remove larger debris daily as the circulation deposits it all in a neat little pile in the middle after the pump shuts off & a Hayward skimmer takes good care of the surface.
I always have a very fine 'substance' that collects in the wrinkles on the floor. It is always brown in color, and dissipates quickly when I brush. After a vacuum this 'substance' will begin to accumulate within a few days. I cover my pool every night (not during a SLAM) & notice a fine dirt/dust on the cover, as well as the patio furniture by the pool.
I brush daily, and only backwash when my pressure rises over 20%. Pool is chlorinated with 12.5% liquid.
Below is about a month of testing notes.
Any thoughts on what could make the floor feel slimy as well as cause a reduction in clarity & 1.5ppm overnight loss?
I have never seen any green in this pool, and wish to keep it this way. Looking at my data all the way back to the "poop" SLAM, I have a hard time believing this could be algae as I have never been at my min of 3ppm, and rarely below target of 5ppm.
8/9
10:15am 75F+
FC 9.0ppm
CC 0.0ppm
pH 7.4
TA 100ppm
CYA 40ppm
CH 20ppm
3:15pm 78F
FC 7.5ppm
CC 0.0ppm
5:45pm
Added 20oz chlorine
8/10
6:15pm 79F
FC 6.0ppm (+38oz)
CC 0.0ppm
****************************
8/11 (covered-4" rain)
** VACUUM & BACKWASH
5:30pm 76F
FC 10.0ppm (+12oz)
CC <0.5ppm
pH 7.4ppm
****************************
8/12
5:00pm 82F
FC 7.0ppm
CC 0.0ppm
6:00pm
Added 28oz Chlorine
8/13
5:15pm 83F
FC 7.0ppm
CC 0.0ppm
pH 7.4
6:00pm
Added 24oz chlorine
8/14
5:00pm 84F
FC 6.0ppm
CC <0.5ppm
7:00pm
Added 28oz chlorine
8/15
10:30am 82F
FC 8.5ppm
CC <0.5ppm
3:00pm 85F
FC 7.0ppm
CC <0.5ppm
pH 7.4
6:00pm 85F
Added 24oz chlorine
8/16
9:30am
FC 8.0ppm
CC <0.5ppm
CYA 30ppm
3:00pm 84F
FC 6.0ppm (+32oz)
CC 0.5ppm
TA 90ppm
8/17
5:40pm 86F
FC 4.5ppm (+40oz)
CC <0.5ppm
8/18
4:15pm 89F
FC 6.0ppm
CC 0.0ppm
5:30pm
Added 24oz chlorine
8/19
3:45pm 88F
FC 5.0ppm
CC<0.5ppm
pH 7.4
Added 4oz CYA
5:45pm
Added 32oz chlorine
8/20
5:30pm 87F
FC 5.0ppm (+36oz)
CC 0.5ppm
Top off about 1"
8/21 Covered all am
4:45pm 84F Uncovered
FC 7.0ppm (+20oz)
CC 0.0ppm
8/22
2:30pm 85F
FC 6.5ppm (+24oz)
CC <0.5ppm
pH 7.4
8/23 Covered all am
3:30pm 84F
FC 7.0ppm (+20oz)
CC 0.5ppm
8/24
6:30 86F
FC 5.5ppm (+30oz)
CC <0.5ppm
8/25
5:00pm 86F
FC 7.0ppm
CC 0.5ppm
pH 7.4
6:30pm
Added 20oz chlorine
8/26
3:45pm 85F
FC 6.5ppm
CC <0.5ppm
CYA 30+
TA 100ppm
5:45pm
Added 24oz chlorine
8/27
6:15pm
FC 6.0ppm (+30oz)
CC 0.0ppm
8/28 covered until 4:30pm
7:15pm 82F
FC 8.0ppm (+16oz)
CC <0.5ppm
8/29
4:45pm
FC 7.5ppm (+16oz)
CC 0.0ppm
8/30
1:45pm 83F
FC 7.5ppm (+16oz)
CC <0.5ppm
8/31
6:15pm 85F
FC 6.0ppm (+28oz)
CC 0.5ppm
9/1
6:00pm 85F
FC 7.0ppm (+24oz)
CC <0.5ppm
pH 7.4
9/2
6:15pm 85F
FC 5.5ppm (+32oz)
CC 0.5ppm
CYA 30 (+4oz)
9/3
******* Start of SLAM *******
6:30pm
FC 6.5ppm(+80oz)
Kids complained floor slimey & water hazy
CC 0.5ppm
******* Start of OCLT *******
7:30pm
FC 18.0ppm
CC 0.5ppm
9/4
6:00am
FC 16.5ppm (+28oz)
CC 0.0ppm
4:45pm
FC 14.0ppm (+20oz)
CC 0.5ppm
******* Start of OCLT *******
8:00pm
FC 15.5 ppm
9/5
6:30am 78F
FC 15.0ppm (-0.5ppm)
CC 0.0ppm
Water is GLASS CLEAR
******* End of OCLT *******
******* End of SLAM *******
6:15pm 82F
FC 11.0ppm (+36oz)
CC 0.0ppm
9/6
9:40am
FC 13.5ppm
CC <0.5ppm
4:45pm 82F
FC 11.0ppm (+36oz)
CC 0.0ppm
9/7
6:45am 79F
FC 13.5ppm (+20oz)
CC <0.5ppm
CYA 40ppm
Pool looks cloudy
9:30am
FC 16.5ppm
CC 0.0ppm
2:00pm
FC 14.5ppm (+16oz)
3:00pm
Add 8oz chlorine
5:30pm
FC 15.0ppm (+30oz)
CC 0.0ppm
9/8
5:00am
FC 18.5ppm (+8oz)
CC 0.0ppm
Dom
I really try my best to maintain a sanitary pool. FC is measured everyday around 4:00pm-ish, chlorine additions are usually early evening when the sun is off the pool. My wife says I obsess with the pool.
Early last week while I was enjoying an early evening swim I thought to myself, 'the pool looks a little cloudy' (gasp).
I SLAMmed the pool earlier in the year when some local birds were using it as their restroom, meeting all 3 criteria.
http://www.troublefreepool.com/threads/99394-Gonna-SLAM-the-poop-out-of-this-pool!
The pool has been crystal clear since, up to last week when I thought it was not. I've found that when the sun get low and the pool is in the shade the water never looks as good as it does in the direct sunlight, and that is what I thought I was seeing.
Last Thursday my granddaughter says "pop- the pool floor feels a little slimy".......
Not what I wanted to hear one day before a holiday weekend that has friends and family in the pool all weekend.
I pulled the ladder to scrub it down (water from inside was clear, but no FC) and immediately rose FC to my shock level based on CYA.
Here are the testing notes from a two day SLAM. (Remember, I'm working around an active pool here):
9/3 (last CYA=40ppm)
******* Start of SLAM *******
6:30pm
FC 6.5ppm(+80oz)
Kids complained floor slimey & water hazy
CC 0.5ppm
******* Start of OCLT *******
7:30pm
FC 18.0ppm
CC 0.5ppm
9/4
6:00am
FC 16.5ppm (FAIL OCLT)(+28oz)
CC 0.0ppm
4:45pm
FC 14.0ppm (+20oz)
CC 0.5ppm
******* Start of OCLT *******
8:00pm
FC 15.5 ppm
9/5
6:30am 78F
FC 15.0ppm (-0.5ppm)
CC 0.0ppm
Water is GLASS CLEAR
******* End of OCLT *******
******* End of SLAM *******
Fast forward to last night. I'm enjoying an evening swim now that I have the pool to myself and I say, 'pool looks a little cloudy'.........
The pool is under two large trees, always dropping something in the water. I vacuum every 10-15 days, but remove larger debris daily as the circulation deposits it all in a neat little pile in the middle after the pump shuts off & a Hayward skimmer takes good care of the surface.
I always have a very fine 'substance' that collects in the wrinkles on the floor. It is always brown in color, and dissipates quickly when I brush. After a vacuum this 'substance' will begin to accumulate within a few days. I cover my pool every night (not during a SLAM) & notice a fine dirt/dust on the cover, as well as the patio furniture by the pool.
I brush daily, and only backwash when my pressure rises over 20%. Pool is chlorinated with 12.5% liquid.
Below is about a month of testing notes.
Any thoughts on what could make the floor feel slimy as well as cause a reduction in clarity & 1.5ppm overnight loss?
I have never seen any green in this pool, and wish to keep it this way. Looking at my data all the way back to the "poop" SLAM, I have a hard time believing this could be algae as I have never been at my min of 3ppm, and rarely below target of 5ppm.
8/9
10:15am 75F+
FC 9.0ppm
CC 0.0ppm
pH 7.4
TA 100ppm
CYA 40ppm
CH 20ppm
3:15pm 78F
FC 7.5ppm
CC 0.0ppm
5:45pm
Added 20oz chlorine
8/10
6:15pm 79F
FC 6.0ppm (+38oz)
CC 0.0ppm
****************************
8/11 (covered-4" rain)
** VACUUM & BACKWASH
5:30pm 76F
FC 10.0ppm (+12oz)
CC <0.5ppm
pH 7.4ppm
****************************
8/12
5:00pm 82F
FC 7.0ppm
CC 0.0ppm
6:00pm
Added 28oz Chlorine
8/13
5:15pm 83F
FC 7.0ppm
CC 0.0ppm
pH 7.4
6:00pm
Added 24oz chlorine
8/14
5:00pm 84F
FC 6.0ppm
CC <0.5ppm
7:00pm
Added 28oz chlorine
8/15
10:30am 82F
FC 8.5ppm
CC <0.5ppm
3:00pm 85F
FC 7.0ppm
CC <0.5ppm
pH 7.4
6:00pm 85F
Added 24oz chlorine
8/16
9:30am
FC 8.0ppm
CC <0.5ppm
CYA 30ppm
3:00pm 84F
FC 6.0ppm (+32oz)
CC 0.5ppm
TA 90ppm
8/17
5:40pm 86F
FC 4.5ppm (+40oz)
CC <0.5ppm
8/18
4:15pm 89F
FC 6.0ppm
CC 0.0ppm
5:30pm
Added 24oz chlorine
8/19
3:45pm 88F
FC 5.0ppm
CC<0.5ppm
pH 7.4
Added 4oz CYA
5:45pm
Added 32oz chlorine
8/20
5:30pm 87F
FC 5.0ppm (+36oz)
CC 0.5ppm
Top off about 1"
8/21 Covered all am
4:45pm 84F Uncovered
FC 7.0ppm (+20oz)
CC 0.0ppm
8/22
2:30pm 85F
FC 6.5ppm (+24oz)
CC <0.5ppm
pH 7.4
8/23 Covered all am
3:30pm 84F
FC 7.0ppm (+20oz)
CC 0.5ppm
8/24
6:30 86F
FC 5.5ppm (+30oz)
CC <0.5ppm
8/25
5:00pm 86F
FC 7.0ppm
CC 0.5ppm
pH 7.4
6:30pm
Added 20oz chlorine
8/26
3:45pm 85F
FC 6.5ppm
CC <0.5ppm
CYA 30+
TA 100ppm
5:45pm
Added 24oz chlorine
8/27
6:15pm
FC 6.0ppm (+30oz)
CC 0.0ppm
8/28 covered until 4:30pm
7:15pm 82F
FC 8.0ppm (+16oz)
CC <0.5ppm
8/29
4:45pm
FC 7.5ppm (+16oz)
CC 0.0ppm
8/30
1:45pm 83F
FC 7.5ppm (+16oz)
CC <0.5ppm
8/31
6:15pm 85F
FC 6.0ppm (+28oz)
CC 0.5ppm
9/1
6:00pm 85F
FC 7.0ppm (+24oz)
CC <0.5ppm
pH 7.4
9/2
6:15pm 85F
FC 5.5ppm (+32oz)
CC 0.5ppm
CYA 30 (+4oz)
9/3
******* Start of SLAM *******
6:30pm
FC 6.5ppm(+80oz)
Kids complained floor slimey & water hazy
CC 0.5ppm
******* Start of OCLT *******
7:30pm
FC 18.0ppm
CC 0.5ppm
9/4
6:00am
FC 16.5ppm (+28oz)
CC 0.0ppm
4:45pm
FC 14.0ppm (+20oz)
CC 0.5ppm
******* Start of OCLT *******
8:00pm
FC 15.5 ppm
9/5
6:30am 78F
FC 15.0ppm (-0.5ppm)
CC 0.0ppm
Water is GLASS CLEAR
******* End of OCLT *******
******* End of SLAM *******
6:15pm 82F
FC 11.0ppm (+36oz)
CC 0.0ppm
9/6
9:40am
FC 13.5ppm
CC <0.5ppm
4:45pm 82F
FC 11.0ppm (+36oz)
CC 0.0ppm
9/7
6:45am 79F
FC 13.5ppm (+20oz)
CC <0.5ppm
CYA 40ppm
Pool looks cloudy
9:30am
FC 16.5ppm
CC 0.0ppm
2:00pm
FC 14.5ppm (+16oz)
3:00pm
Add 8oz chlorine
5:30pm
FC 15.0ppm (+30oz)
CC 0.0ppm
9/8
5:00am
FC 18.5ppm (+8oz)
CC 0.0ppm
Dom