I did take the chairs, umbrella, swim bar and chiller fountains out and brushed them and washed them with bleach.
Chlorine/CYA Issues
- Thread starter Emvandy
- Start date
Katodude
Silver Supporter
- Aug 22, 2017
- 2,623
- Pool Size
- 15000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
Good, looking at your pictures I wonder if your chiller fountains are restricting some of the water circulation? Keep them out for the rest of the SLAM.
Okay, I'll get the chillers off until this is done. I need to just have an actual pool chiller installed. This is our first summer with this pool, and the pool at our last house was so shaded that we never had an issue with the pool temp being too high. It also wouldn't really be an issue if it were just us swimming, but I'm not supposed to teach lessons if the pool gets too warm.
Katodude
Silver Supporter
- Aug 22, 2017
- 2,623
- Pool Size
- 15000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
I know it is a pain to take them off and put them on, but you might be able to just run the chillers at night when they are most effective.
Also since you have been using chillers I would up the brushing since that will also move more water around.
Also since you have been using chillers I would up the brushing since that will also move more water around.
Oh, I didn't think about that. That is a good point. My husband also said that the evap on the chillers might be flaring off the chlorine faster too.
Okay, I've got the chillers off and I've brushed every single thing I can think of. I'm still having levels drop about 6 ppm every day during the day between 12-5pm, and then dropping around 4 ppm at nighttime. I've been through almost 17 gallons of liquid chlorine and I'm going to pick up 6 more bottles tonight. I just can't figure out where this algae might be hiding. Tomorrow morning will be a week since I started the SLAM.
Katodude
Silver Supporter
- Aug 22, 2017
- 2,623
- Pool Size
- 15000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
- May 3, 2014
- 58,621
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
With no data in Poolmath, I did a quick look back and are you trying to SLAM with very high CYA? If you are not passing the OCLT at high FC levels, let your FC drop to 20 ppm or so and do the OCLT at that level. The error in FC testing at elevated FC's can hamper your results.
My FC is down to 24 as of this morning, so should I just not add anything today and let it drop, or should I add to get to 20 ppm if it gets below that by the end of the day?
Katodude
Silver Supporter
- Aug 22, 2017
- 2,623
- Pool Size
- 15000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
Based on what you have been losing, it should get there easily by the end of the day.
Okay, I left it alone today and just tested before I go to bed. FC is at 15.5 ppm right now and .5 CC. Keeping my fingers crossed I can pass the OCLT tonight!
Woohoo! Passed OCLT! Only lost .5 ppm last night and the CC is less than .05 and water is crystal clear! Now I'll wait until the FC gets down to 10 ppm and turn the SWG back on. I really appreciate the help that you all gave me during this! I really wouldn't have known what to do otherwise. Thank you all!
Katodude
Silver Supporter
- Aug 22, 2017
- 2,623
- Pool Size
- 15000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
Now remember this experience. You dont want to have to do it again. Test often, and keep FC on the high side and you wont have this problem again.