When I returned home from work last night I noticed my Xenia was closed. Also my mushrooms were closed and fish weren't swim as usual. I started to check the water for any spikes. I immediately knew the problem when I felt the water. The heater had gotten stuck in the on position. The temp was 90+. I started adding cool water and ice both ro water. I added a cup or so of ice every 20 min. Temp is in the normal range and everyone seems happy now. Should I watch for any trouble in days to come?