Ok, just had a pool put in by shasta pools az. I have a pentair system 3 and a V.S. pump with a DE filter. Now the startup guy came out to turn on the system he left it on speed 3 and turned the water feature on. since then I have brought a pool water sample down to Leslie's and they gave me a report I had to add just a little bit of muriatic acidand chlorine he also advised me to add a little bit of shock since then I brought another sample to Leslie's and he said everything was okay. so my question is can I slow this pump down? do I have to keep it running in this speed? they have not contacted me for orientation to the equipment so I have been using this site and the owners manual that I got from online to try and determine what the best procedure is. I have called Shasta a couple of times and I still have not got back to me for orientation? Thanks for the help. btw the pool has been running like this for over a week.