Did you test your water with ATI or Triton? Did you notice a big difference in your alkalinity based on your test kits at home? I was happy to see ATI says my tank has a tiny amount of nitrate and phosphate now but my test kits won't pick it up. I will try again tonight.
On 10/3 I tested and sent in a sample
Alk ATI 7.68 Salifert 8.6
Calcium ATI 419.6 Salifert 410
Mg. ATI 1319 Salifert 1395
Phospphospate ATI 0.06 Salifert 0.0
I use ATI, I think it’s the best value as it tests a lot of perhaps and includes a separate test for yoru RO/DI water too. It just takes 2 weeks to get results and navigating the webpage can be a PITA