Two questions...
1. Is the blanket negatively affected by an ozonator?
The ozonator has not seemed to have any effect so far. The blanket has been in place since November, there is no deterioration or discolouration where the ozonator bubbles hit the blanket.
2. Grace - did you see any reduction in your electric bill since using this blanket?
This is our first winter with a hot tub so I don't know what our bill would be without a blanket. Sometimes I leave the blanket on and sit under it with just my head sticking out. If I happen to get a puddle of water on top of the blanket it will cool down to icy cold from the outside air fairly quickly, which shows that the heat from the water underneath is not going through the blanket. Also just having it on while I am sitting in the tub reduces the amount of steam (heat) escaping into the air so I hope that is saving me money. It gets very cold here, sometimes down to -30 Celsius (or colder). I was very concerned about the energy use of the tub that is why I wanted a blanket. I have not seen a huge jump in my hydro bills since having the hot tub.