Orp and water changes?

[Notsolostfish]

My orp ever since i started awc few months ago dropped big time? Im at 215? Is something bad happening from awc?

 

[KrisReef]

Can you put the probe in your water change bucket? Seem like it might tell us a bit?

 

[Randy Holmes-Farley Verified Community Expert]

New salt water generally has a lower ORP than tank water because of the oxidation states of trace elements in it. Iron, for example, is more soluble in the lower ORP ferrous form. Folks often see a drop when doing a water change. The idea that higher ORP is cleaner water is just not correct.

ORP measurements also drift over time, and cleaning the probe can be useful.

I stopped bothering to measure ORP since I never did anything about the values.

 

[rtparty]

Unless you’re dosing ozone, ORP is pointless to measure and track. It tells you nothing important

 

[Notsolostfish]

New salt water generally has a lower ORP than tank water because of the oxidation states of trace elements in it. Iron, for example, is more soluble in the lower ORP ferrous form. Folks often see a drop when doing a water change. The idea that higher ORP is cleaner water is just not correct.

ORP measurements also drift over time, and cleaning the probe can be useful.

I stopped bothering to measure ORP since I never did anything about the values.

My alk is going up in my system confirmed with hanna. I was around 8.3-8.5 and as you can see itd starting to creep up. I dose all for reef 120ml and red sea alk 8ml 24 hour seperate dose. I tested my awc bin its at 8.9alk. Is that why alk went up? Because my awc bin at 8.9?

 

[Randy Holmes-Farley Verified Community Expert]

My alk is going up in my system confirmed with hanna. I was around 8.3-8.5 and as you can see itd starting to creep up. I dose all for reef 120ml and red sea alk 8ml 24 hour seperate dose. I tested my awc bin its at 8.9alk. Is that why alk went up? Because my awc bin at 8.9?

Alk would be rising because you are dosing too much AFR or the Red Sea alk for the demand. The water change effect is pretty small. A 1% daily change with water at 8.9 dKH in a tank with 8.4 dKH will boost alk by 0.005 dKH per day or 0.035 dKh per week. .

 

[Notsolostfish]

My alk is going up in my system confirmed with hanna. I was around 8.3-8.5 and as you can see itd starting to creep up. I dose all for reef 120ml and red sea alk 8ml 24 hour seperate dose. I tested my awc bin its at 8.9alk. Is that why alk went up? Because my awc bin at 8.9?

Alk would be rising because you are dosing too much AFR or the Red Sea alk for the demand. The water change effect is pretty small. A 1% daily change with water at 8.9 dKH in a tank with 8.4 dKH will boost alk by 0.005 dKH per day or 0.035 dKh per week. .

Yes but its rising all of sudden

U can see i was doing fine and the. It creeped up.

 

[Randy Holmes-Farley Verified Community Expert]

Could be demand has slowed for many reasons, or your pumps are delivering more despite not changing them.

The measurement may also not be accurate.,,

 

[Randy Holmes-Farley Verified Community Expert]

How much water are you changing by AWC?