..well, more than just slam questions but anyway.
I have been maintaining my first pool with help from threads here for a little over 1 year now. In that time my water has always been clear. I record my tf-100 results and add what pool math tells me to add.
I had to go out of the country on business for 2 weeks. I left my wife with what I thought was enough info to maintain the pool while I was gone. I didn't have her do anything as I assumed basic fc and ph tests and adding the necessary amount of bleach or muriatic acid would be enough. I showed her how to turn on the vacuum and to run that 2 days per week as I had always done.
Anyway, by the 4th day or so she tells me the pool is turning green. Test results seemed fine though and we continued to add bleach as indicated. It kept getting worse according to her (the green) so I just knew I would be in for some fun when I returned.
Yep, its green. However, even in this state the test results were not as bad as I thought they would be:
I knew I would have to slam so I started working on getting the ph down to around 7.2 while still adding some bleach. I also had to drain some water as the level was a bit high from all of the rain here. Once that was done I worked out what I needed to add bleach wise for the cya that I had and needed to wait another day as I was out of bleach.
Today then started the slam. PH was around 7.2, pump set to run 24/7 and bleach stocked up. Started at 12pm today. Got the FC up to slam level (overshot it to 23 instead of 16...not on purpose) and have been testing every 3 hours to see what it is doing.
1. I have a 2 speed pump. Is it ok to run on low speed only during slam?
2. I am not seeing FC drop at all so far. I thought it would. I have never slammed before; is this normal? It hasn't been 24 hours yet.
3. By overshooting the FC level, is that causing an issue? Since that initial add, I have not added any more bleach.
I still find it odd that the test levels were not horrible while the pool was green. I still am not sure what happened. Maybe the vacuum wasn't run...maybe it was from all of the extra rain while I was gone...who knows.