Temperature gets too high, rises up to 120 degrees and does not cool down!!!!Flower also jumps at but only at 120 degrees!! Thermostat taken out, thermoswitch new, cooler is free, temperature indicator is also fine!!! I tend to the water pump, because the top hose is so hot that it bursts shortly before and the bottom hose on the cooler is ice cold!!! At the balance tank still a small hose, where the water should always come out, does not make it. Please help me!