I am moving out of my house and getting a renter. I have had no problems with maintenance of my 18' metal above ground with vinyl liner using the TFP method. I have a sand filter and good pump. I have tried 8 pool services and none of them will service my pool. I do not like a tenant maintaining the pool as it almost always doesn't work out. I am looking into what my automation options are that don't break the bank. I have a source of 13% liquid chlorine. I am wondering what people are doing. If you automate chlorine injection, doesn't it always either build up too much or fall short? Looking for some advice on systems and strategies. Thanks!