Hydor Exthernal Heater Problem
I have a very strange problem with my new external in-line heater in my aquarium: Hydor ETH 200W
Every time I turn it on, the pH jumps from 6,7 till almost 12-13. Can anybody tell me why is this happening? The ph meter is for 100% working good, I have checked it with other liquids.
The ph jumps just after I turn on the heater. Have you heard about such situation?