pH spiking to 18.2 with Apex lite

[Miyagi570]

Can someone help me with my Neptune apex lite and lab grade pH probe? Every other day my lab grade pH spikes to 18.2 at 6:30am and temp spiking to 181.3 at 4:30pm(after I installed my ph probe). I called Neptune and they said it might be something in my house with high wattage making it spike. Is anyone else having this problem?:eek1:

[Randy Holmes-Farley]

What time do nearby electrical things come on? Tank lights and such?

[Miyagi570]

The only thing that might come on is my heater at 6:30am. Everything else in the room is off until 11:45am.

[bertoni]

Hmm, I have no idea what might do that. How far apart are the two probes?

[Randy Holmes-Farley]

Try setting the heater to another time and see what happens.

[Miyagi570]

My temp probe is in my display and my pH probe is in my refugium.

[Miyagi570]

The heater is on auto it comes on when the temp drops below 77.0

[disc1]

If it were me I'd want to try it out with another unit and see if the problem reproduces.