I have been reading a few of the TFP posts about changing over to pvc pipe and installing a thru-wall skimmer, which I have started doing. I have a 15’ X 42” agp with a Hayward 1 hp pump and sand filter. I have been using Baquacil for the past 10 years or so and it works ok for us. But I am open to learning about salt water systems. Any and all advice would be greatly appreciated.