- Joined
- Sep 23, 2013
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This is more of a curiosity, but I some what recently pulled all of my Marco rock (175 pounds) from my DT and replaced it with ceramecos vidarock product. I'm ecstatic with the conversion, but my ORP dropped from my consistent 415 to 430 down to the low 300s. It's been 3 months and there has been no change.
There were no other changes made to the system which consists of 150 DT, 125v sump, 40 fuge and 40 FT. I have tested the probe using 400mv solution and it checked out at 396.
If anything my tank had less detritus than ever. The vidarock has far fewer contact points with the sand bed and I now get good flow under and through the rock. Marco rock was a detritus trap. I was constantly using a power head to clean the pockets.
I'm not going to pretend I fully understand ORP and realize it's a complex number. I don't take any actions based on ORP, I just tend to note the changes when I do things like swap carbon etc.
I'm curious if the drop is simply due to the change in material or if there is something else afoot. Appreciate any thoughts or insight you may have.
Regards,
Mike
There were no other changes made to the system which consists of 150 DT, 125v sump, 40 fuge and 40 FT. I have tested the probe using 400mv solution and it checked out at 396.
If anything my tank had less detritus than ever. The vidarock has far fewer contact points with the sand bed and I now get good flow under and through the rock. Marco rock was a detritus trap. I was constantly using a power head to clean the pockets.
I'm not going to pretend I fully understand ORP and realize it's a complex number. I don't take any actions based on ORP, I just tend to note the changes when I do things like swap carbon etc.
I'm curious if the drop is simply due to the change in material or if there is something else afoot. Appreciate any thoughts or insight you may have.
Regards,
Mike