CSST Immersion Heater

[700G]

I put together an immersion heater to use in my 85 gallon conical fermenter. I pulled a 15' long 400W silicone heater through 1" CSST and capped off one end. I'm hoping that it doesn't get too hot within the CSST and burn up the heater, but we shall see. I think I'll be ok though since I'll be running it through a temp controller and the ferment will circulate the whole time.