I'm thinking of superslamming - of bringing ppm up to 15 or 20 for a week. Any downside to doing that?
What is a superslam?
Risking damage to liner and equipment.Any downside to doing that?
My first summer, my FC minimum was about 20. I swam in it no problem. 'course the CYA was somewhere between 220 and 240 and I was under severe water restrictions.I'm thinking of superslamming - of bringing ppm up to 15 or 20 for a week. Any downside to doing that?
I am unofficially ADD and hate waiting so last time I had a slight algae attack and was going out of town I did what I call a Kill Shock. CYA was 50 and FC was already around 8 but wasn’t holding. Turned off SWG And added 4 gallons of 12% and 2 more the next day.Hi @duraleigh -
1) By superslam I mean to double the ppm recommended in the SLAM guidelines.
2) Yes, I have read the ABCs of Pool Chemistry.
3) Yes, I have read the SLAM article. I test FC thrice daily. I maintain 10ppm, vacuum and remove debris, and run the filter overnight. We clean the filter daily, sometimes more frequently. My pH is a little high. The pool gets blue over the course of the four or five days, but has never been clear, indicating that slamming has never really been complete. Eventually I lose interest, or get called away, or we have a power outage, or we run out of chlorine for a few days, and then I'm back to slamming. I thought upping the CYA might help maintain TC given that it was sunny and hot for a few weeks, but it hasn't really. CYA was 20 for most of the summer, now it's 80.
1) "double the ppm recommended in the SLAM guidelines" - This would be a bad idea (but I dont think you actually read/understand the SLAM guidelines) but if you were to double the SLAM level (FC of 62 in your case) you would be wasting a lot of chlorine and run the risk of damaging equipment.Hi @duraleigh -
1) By superslam I mean to double the ppm recommended in the SLAM guidelines.
2) Yes, I have read the ABCs of Pool Chemistry.
3) Yes, I have read the SLAM article. I test FC thrice daily. I maintain 10ppm, vacuum and remove debris, and run the filter overnight. We clean the filter daily, sometimes more frequently. My pH is a little high. The pool gets blue over the course of the four or five days, but has never been clear, indicating that slamming has never really been complete. Eventually I lose interest, or get called away, or we have a power outage, or we run out of chlorine for a few days, and then I'm back to slamming. I thought upping the CYA might help maintain TC given that it was sunny and hot for a few weeks, but it hasn't really. CYA was 20 for most of the summer, now it's 80.
I don't have actual data on that, but anecdotal evidence supported by chemical theory. My wife swims in an indoor commercial pool over the winter 3-4 times a week that has had 1-2 ppm FC with no CYA in the water and every winter season her swimsuits get worn out where the elastic gets shot and the fabric gets thinner, basically having her need to get new swimsuits for each winter season. In our own outdoor pool with 3-6 ppm FC and 30-40 ppm CYA, her swimsuits have lasted for 9 summer swim seasons swimming almost every day though she now says she is starting to notice wear. The difference in active chlorine level between the two pools is roughly a factor of 10-20 which likely is reason for the difference. The same is true for the flakiness of her skin and frizziness of her hair between the two pools.