Super heater mixing station

[MJV0103]

So I'm getting ready to do a water change and realize when I take kid off my brute that's something is amiss when I'm smacked in the face with a heat wave. My heater apparently lost its ability to tell temp and heated the water to 101. There's a light tan film of something on the powerheads and heater.

Still good to use after it cools down?

[gone fishin]

Wow, I don't know if I would use it. Is the heater still intact? does it look like anything may have precipitated out? Don't know about the film.

I think I would just toss the water and make more.

[MJV0103]

Heater looked fine. Just had that light film on it

[Jscwerve]

I wouldn't trust it.

https://youtu.be/7EzObDTkwQk

Way horrible scenario for a heater malfunction. Yours isn't near as bad, but just in case, is the value of some water and salt worth the risk to your tank?

[thegrun]

Most likely what you are seeing is calcium precipitation which increases with heat. I would say it will be fine to use once it cools down, but will likely be a little low in calcium, alkalinity and perhaps magnesium.

[scooter31707]

+1, I would discard it and make another batch.