First time pool owner and I REALLY wish I had spent some time here at TFP prior to having a pool built in 2013. I would have done some things differently for sure! This is our 2nd swim season and I'm just now getting a handle on how things work. I'm tired of testing three different ways, getting readings that are all over the place and never feeling confident about what I should or should not do. "Pool guy" comes every other week to test water and add chemicals but it's hard to check his work when I cant even duplicate his readings. I am about to order the T-100 kit as that seems to be the most esteemed kit available. Thanks so much for all the great information and please be patient as I learn to use this forum.