Split from original topic here: Day 3 of SLAM, little change
I found the slam method to be an extreme waste of time!
One the above posters said 7 days per shock. What? really, why? Why waste so much time and effort?
Last year, I spent 3-4 days each time and many gallons of bleach. Kept ch level, ph, ca, etc at levels described. So, there's no using the pool for that time.
I have a lot of trees and the algae kept coming back a few weeks later. Yes, I thoroughly cleaned the filter, light, walls, ladder etc. soooo much work.
I then used the Xtra blue pool shock, and haven't had any problems since.
In fact this year, I simply used this shock on opening with normal cleaning routine, and haven't had one algae issue all season thus far. I haven't even shocked the pool since opening in early May.
Other than using my robot, I haven't manually cleaned the pool at all this year (since opening) with exception of a 1 routine de filter clean.
Since opening I've used very little chemicals this year as well. A touch of dry acid because SWCG seems to allow ph to rise. Last year I had to add a lot of acid along with bleach.
Enjoy your pool and don't waste the time with constant shocking and cleaning.
I'm sure someone will tell me that the Xtra blue is just some bs made up by the pool stores to get consumers to waste their money, and the chemicals used will kill my family, but I found it to be very inexpensive (less than $10), much more effective, no more harmful than extremely high chlorine, and much less time consuming than slamming.
I'm enjoying my pool this year, and not constantly working on it.