Hi Prilyfe13, don't worry, you don't need to fix anything! EC (Electrical Conductivity) and TDS (Total Dissolved Solids) are measuring the same thing—nutrient concentration—just using different scales.
Usually, your meter converts the EC value into TDS (ppm), so it's perfectly normal for the TDS number to look much higher than the EC number. You aren't doing anything wrong. Your pH of 5.9 is spot on. Just keep monitoring your plants now that you've stabilized the water temperature. Happy growing!