ORP = 9... ummm??

[VashonBigs]

So I have a 1 month old tank. I’m not a spring chicken when it comes to reefing. This is my 3rd tank (2nd currently operating). This is my first time with a full Apex setup. Never knew what ORP was till Apex. I have minor algae for a new setup, 3 baby clowns, a few cleanup crew. Everything in the take seems fine but according to Apex this ORP reading just keeps dropping. My nitrogen cycle is looking fine... a little nitrate but nitrate and ammonia basically holding at close to zero after going through my cycle. Should I be concerned??? Maybe time for my GFO reactor to get started up?

 

[ScottR]

From what I understand, unless you run ozone, this number is meaningless. I don’t believe many people watch this number and/or use this probe.

 

[Randy Holmes-Farley Verified Community Expert]

I highly doubt it is accurate, and I agree the actual number is not particularly useful. I stopped bothering to measure it even though it took no work.