Gracie
Good to see you are taking to this like a duck to water. The only thing is I belive the Walmart test for total chlorine. Check to see if it says OTO on the label. OTO turns yellow and test for total chlorine. You may want to invest in DPD test kit. I found one that did free chlorine and combined it with the walmart kit untill I ran out of tabs. I found a liquid DPD that gives both free and total chlorine pretty cheep at a pool store.I had them test my water and they tried to sell me more chemicals includeing a copper based wonder liquid.I kinda ticked them off when I passed. The nailed me for around $200 when I first bought the pool. I am drooling to get ones of Ben's kits but I am gonna wait untill next season.
Later
Steve