Question about anemone death and dropped ORP

witchywoman725 · Jul 4, 2023

Around 1am last night my ORP took a dive (I assume because an anemone in my tank started to die- it got itself stuck in a power head despite having guards and was pretty chewed up). When I woke up this morning the ORP was at 0. I removed the anemone, but now it seems my ORP is just sitting at 0. All my other parameters are within normal range (for my lps/softy tank) and all the other tank inhabitants and corals seem perfectly happy. Could the death of the anemone have caused this issue? I have not calibrated the ORP probe and I do not have the chemical on hand to do it. I know ORP probes are typically pretty useless if you don’t run ozone (which I do not). I guess my main concern is predicting a potential tank crash due to the anemone dying… thoughts?

Ammonia 0
Nitrate 17
Phosphate .04
Ph 8-8.06
Alk 9.28
Calc 462
Mg 1297

I run daily 10g AWCs and it’s a 210g tank. I pulled and cleaned the ORP probe also this morning and did a restart on the apex with no change.

blaxsun · Jul 4, 2023

The fluid to calibrate the ORP probe is ridonkuously expensive, so I'd probably nix that idea. ORP is still measurable without ozone.

I can't say if it's due to the anemone death.

I don't know how old your Apex is but it's possible there's an issue with the probe or it needs to be replaced. You may want to reach out to Neptune in the interim (they may have some ideas).

Randy Holmes-Farley · Jul 4, 2023

I’d clean the probe and just return it and see what happens over a week or so.

witchywoman725 · Jul 4, 2023

blaxsun said:
The fluid to calibrate the ORP probe is ridonkuously expensive, so I'd probably nix that idea. ORP is still measurable without ozone.

I can't say if it's due to the anemone death.

I don't know how old your Apex is but it's possible there's an issue with the probe or it needs to be replaced. You may want to reach out to Neptune in the interim (they may have some ideas).

Thank you!