New TFPEr here! Long story short: my CYA is on the high side at 90 ppm (after draining and refilling over 1/3rd of my pool a week or so ago. Pool is clear, but I’m losing about 3 ppm in FC overnight, started SLAM tonight to address that. Because my CYA is still high, I’m having to slam at 35 ppm in FC. I’m curious whether the Taylor k-1515-a test can be accurately diluted and doubled to get a good idea of FC to save on reagent? If not, I’ve ordered/received extra, but thought I’d check! Thanks in advance. Cannot drain and dilute CYA more for another few weeks, so I’m trying to work best with what I’ve got!