I am new to testing pools. I have a spa that I have been testing for a few years and have always used test strips, but I have taken over testing my pool (My pool guy was doing a horrible job. Free maintenance for the first year that he installed the pool). I purchased a Leslie's DPD test kit before I found you guys. Getting better at testing but my question is this. Should I purchase the TFT100 kit or can I get the refill pak and use my test block, etc from my Leslie's kit? Also I am on a Salt system and have the salt readout on my remote. DO I need to test this seperately as well?