Ozone not rising

[MarcinPl]

I am getting sick of fighting ORP.
I bought ozone generator which at the beggining worked well. Overtime, after a water change I couldn't rise my ORP
I went throught everything: Cleaned and checked the orp probe (I use Neptune's) accuracy - the probe seems to be working well.
So I changed the probe position - nothing, my orp wont go above 240
I changed the ozone generator. I actually went throught 3 different generators including oversized ones. Nothing
I changed the ozone connection hose and probe placement multiple times - nothing

Any ideas ? Maybe someone had similar issue ?
I also use UV and carbon

 

[Jay Hemdal Verified Community Expert]

I am getting sick of fighting ORP.
I bought ozone generator which at the beggining worked well. Overtime, after a water change I couldn't rise my ORP
I went throught everything: Cleaned and checked the orp probe (I use Neptune's) accuracy - the probe seems to be working well.
So I changed the probe position - nothing, my orp wont go above 240
I changed the ozone generator. I actually went throught 3 different generators including oversized ones. Nothing
I changed the ozone connection hose and probe placement multiple times - nothing

Any ideas ? Maybe someone had similar issue ?
I also use UV and carbon

How did you check the ORP probe? Those are often the weak point in applying ozone. Is the probe connected to a controller? If so, is the ozone generator running in conjunction with it? How often is it running?

Here is a basic article I wrote on ozone use:

https://www.reef2reef.com/threads/ozone-use-in-marine-aquariums.1089997/