So, I had a local poolstore open my pool. I have someone open and close...I do all the rest. Anyway, I got home last night around 8 and went to check on things. My maindrain is plumbed into the far skimmer and uses a diverter valve...I wish I knew to ask about this before starting the project, but I learned about this too late. Well, I found the diverter valve was placed in the near skimmer, which has the majority of the suction. Separately, I had placed new skimmer socks on the skimmer baskets and had them in a bucket on the pool deck along with the other fittings. Here's the other issue....I found that they placed DE in the near skimmer, with the basket in place....SO, no DE got into the filter....it was all stuck in the skimmer sock. I called them and left a message last night....waiting to hear from them this morning. I'm sure there's no permanent damage, it's just unbelieveable that they didn't know where to place the diverter valve or where/how to put DE into the filter. Separately, I also noticed that at my sheer descent, that the water was foaming....thinking they put in a cheap algecide...I'll be asking about that today as well.