Orp to high ?

[fishguy597]

I started monitoring orp on my apex unit the last few months because I was debating on vodka dosing. I have noticed that after a while my orp at night is at 440 and 420 when the lights are on. I have read a couple of articals. Randy posted and I know that at 500 levels get toxic. what can I do to bring my orp. down before I have problems? Seems like when I do a water change it will drop to 350 for a few hours then it'll shot up to the 400's. I am not running ozone and I'm not doing anything fancy with my tank.

 

[billsreef]

If your not running ozone, your ORP won't get too high

 

[fishguy597]

That's what I thought as well. Only thing is its 25 points higher than usual. Im going to recalibrate my probe even though its only 3 1/2 months old. the only thing I can think of is I added some carbon pads to my drip tray. I also have been running carbon passively in a bag in my sump . Can to much carnon produce this kind of effect?

 

[Steve175]

Confirm the measurement before making any changes. $0.02

 

[billsreef]

When's the last time you cleaned the probe? They can often get stuff growing on them that will cause the ORP reading to increase.

 

[tazmanian_cowboy]

How should one clean an orp probe and how often?

Sent from my PG86100 using Tapatalk

 

[fishguy597]

When's the last time you cleaned the probe? They can often get stuff growing on them that will cause the ORP reading to increase.

Just cleaned it today with some bleach and rinsed with ro. It's sitting at 321 with just the actinics on now. I didn't think in oh wow it 4 months. Time crept up quick.

 

[billsreef]

I used to keep my probe in a sump that doubled as a lit refugium. I had to clean my probe weekly :eek1: Though for the most part that weekly cleaning only needed to be a quick wipe down with more intensive cleaning only needed every few months

 

[fishguy597]

Yup that's exactly how I have mine set up as well. I'm wondering what it settled out at guess ill find out after work lol.

 

[Randy Holmes-Farley]

I agree that without adding oxidizers like ozone, ORP is never too high. That said, I also do not think that higher is better. Just that you never need to do anything about ORP if it is above 300 mV, and even the upper 200's may be fine.

 

[alanbates12]

Ok I'm interested. Just got an apex, 3 months ago, and I've wondered about ORP. What is it and what will happen if it's high or low? Nevermind, just read this http://reefkeeping.com/issues/2003-12/rhf/feature/index.php Thanks Randy for all you do. You've boosted my knowledge in this hobby greatly.

 

[Randy Holmes-Farley]

You're welcome.

Happy Reefing.