Yes! DynaDome absolutely recommends a thermal blanket at a minimum. The cover will keep the pool from losing heat as well as minimizing your condensation within the pool area. The solar cover will help to retain approximately 95% of the heat and water. So, if you are using the pool every day for 2 hours a day, then the other 22 hours of every day you will be saving on energy costs and water loss.
Do I need a solar cover or thermal blanket?