I must start by apologizing.. I posted in a different section first without formerly introducing myself. The names Alex and I'm a first time pool owner living in Tennessee. I'm married with one baby boy that just arrived. Onto the pool, it's ~ 29000 gallons, IG vinyl with a Hayward sand filter and inline chlorinated. Due to the birth and hospital time involved we had accidentally let our pool fall out of line and I've been glued to this website ever since. I just received my tf-100 test kit today and am excited to finally take back what's mine.. Control over the pool that is. The results of my pool are currently posted with my post of earlier explaining the condition of my pool and everything else. Thanks for giving me confidence in chemistry TFP!