ORP levels , without ozone !

[Yanir34]

Hello , my tank is runing now 1 year and 3 months .
i have some yellow pigment in the warte and in trying to avoid it.
Filtration : skimmer is TUNZE 9430 , UVC 85w , Red Sea filter roller .
i dont have OZONE generator in this tank !
control is with GHL profilux 4 .
im dosing red sea 3 parts + trace elemnts .
can anyone give me advice in this issue ?

 

[Pistondog]

RUn some gac 24/7. Ozone a couple of hours per week. The ozone breaks down the yellowing stuff i to smaller organics which are removed by gac and perhaps skimmer.

 

[Viking_Reefing]

Clean and calibrate your probes. An orp number of over 400 is fairly improbable without running ozone. Your salinity probe also seems of as the number is way out of range.

 

[gbroadbridge]

Hello , my tank is runing now 1 year and 3 months .
i have some yellow pigment in the warte and in trying to avoid it.
Filtration : skimmer is TUNZE 9430 , UVC 85w , Red Sea filter roller .
i dont have OZONE generator in this tank !
control is with GHL profilux 4 .
im dosing red sea 3 parts + trace elemnts .
can anyone give me advice in this issue ?

When was the last time you cleaned and recalibrated your probes?

To remove yellow discolouration use carbon.

 

[Yanir34]

I cleaned and calibrated the probes 3 months ago

 

[KStatefan]

I would try calibrating it again.

 

[Saltees]

I was having 420mV+ ORP without O3. Nonetheless, I un SANDERS 100mg (with dryer) O3 for 8 hours at night into skimmer and set the APEX to shut off at 450mV. APEX never once got to 450mV.

When I do water change, the discharged water is as clear as the new water going in.

 

[Ironwill723]

I was having 420mV+ ORP without O3. Nonetheless, I un SANDERS 100mg (with dryer) O3 for 8 hours at night into skimmer and set the APEX to shut off at 450mV. APEX never once got to 450mV.

When I do water change, the discharged water is as clear as the new water going in.

@Saltees How do you like the Sanders units? Was thinking of purchasing one.

 

[gbroadbridge]

I cleaned and calibrated the probes 3 months ago

If you clean again I bet it drops under 300

 

[IKD]

Hello , my tank is runing now 1 year and 3 months .
i have some yellow pigment in the warte and in trying to avoid it.
Filtration : skimmer is TUNZE 9430 , UVC 85w , Red Sea filter roller .
i dont have OZONE generator in this tank !
control is with GHL profilux 4 .
im dosing red sea 3 parts + trace elemnts .
can anyone give me advice in this issue ?

Hey, I have the same finding. I have a new ORP probe (several weeks) and my ORP averages a bit over 400 as well without ozone. Randy weighed in and eased my mind in the thread. I have a Neptune ORP probe and they did not recommend calibrating their ORP probe but it’s new so I don’t think I have a calibration issue.

https://www.reef2reef.com/threads/setting-up-ozone-but-orp-above-400-already.1011167/#post-11809386

 

[Saltees]

@Saltees How do you like the Sanders units? Was thinking of purchasing one.

Value for money. I ran for 8 hrs in the night where there’s no one in the office, where the tank resides. I can smell residual o3 in the air in the morning after.

 

[Saltees]

@Saltees How do you like the Sanders units? Was thinking of purchasing one.

Value for money. I run for 8 hrs in the night when there’s no one in the office, where the tank resides. I can smell residual o3 in the air in the morning after.