Just joined up yesterday after looking around your site towards the end of pool season last year. Looking forward to opening the pool this year and am shooting for the second week of May if weather cooperates. I will no doubt have lots of questions and want to thank in advance all who respond with helpful advice. Will be using borates as I have used these before. (2 years ago) Don't know if I should mention the brand. I did order the TFT100XL test kit along with the Speedstir and Borates test strips. I'm ready to rock and determined to learn how to test my water myself with my nifty new kit! Thanks TFP for the discount.