ATO sensor used in previous copper QT, ok?

[Schulks]

I used an ATO sensor in a tank that had a Tidal 55, a small jebao powerhead, and heater that had all been used in copper for a few months. While the ATO was being used I did not dose any copper or other medications.

Should I not use that ATO sensor on any coral setup?

 

[vetteguy53081]

I used an ATO sensor in a tank that had a Tidal 55, a small jebao powerhead, and heater that had all been used in copper for a few months. While the ATO was being used I did not dose any copper or other medications.

Should I not use that ATO sensor on any coral setup?

Don’t see an issue as any residue will be quite low