high kh

Hi Experts, My tank parameter been fine but having some issues with high KH & Calcium for a few weeks now. This week for some reasons my nitrate shot up to 20, so I decided to do wc.. while it helped to bring down my nitrate.. my KH & Calcium still in a high range still. Here are my tank...

Hey my KH is extremely high. Like off the charts high. I just got a trident I’m not dosing yet, but it’s out of the testing range. I used a kit and it says my KH is off the chart as well. What do I do? I perform water changes using distilled water and instant ocean salt weekly. Ph 8.23 Ca...