Question on ORP

[hhv00586]

Some time back I got myself an ORP probe. From what I gathered the reading is less important than the monitoring of when it starts to drop off to indicate you need to do a water change

But maybe I got my facts wrong

Anyway I have had the ORP running for almost 4mths, and in that time the ORP reads average 427, each day ranging from ~345 which it hits each midnight to 435 through the mid afternoon

This cycle is the same every day for months now

I have done no water changes (I do supplement trace elements) and run a calc.reactor

After all this time - why no ORP drop off, do I keep doing no water changes - things seem healthy
BTW - tank is a 150g

 

[lsu_fishfan]

I believe that the only time you will see big spikes on orp is when something dies and begins to decay in the tank.

 

[bcavalli]

Mine only varies by 10mv to 20mv and hovers around 370mv. With my levels I have experienced a dip if something dies, perform a water change, get contaminates in my system or by adding something like prime. Other than that I haven't seen mine move much.

 

[grouper therapy]

hhv00586;1078483 wrote: Some time back I got myself an ORP probe. From what I gathered the reading is less important than the monitoring of when it starts to drop off to indicate you need to do a water change

But maybe I got my facts wrong

Anyway I have had the ORP running for almost 4mths, and in that time the ORP reads average 427, each day ranging from ~345 which it hits each midnight to 435 through the mid afternoon

This cycle is the same every day for months now

I have done no water changes (I do supplement trace elements) and run a calc.reactor

After all this time - why no ORP drop off, do I keep doing no water changes - things seem healthy
BTW - tank is a 150g

Do you run an uv?

 

[hhv00586]

yes I run a 36w UV, from 3pm to 9am

 

[grouper therapy]

Turn it off one night and see if it makes a difference. I have on mine and it does drop. Not saying it will but it would be interesting to see if yours does. Uv s do produce some ozone but im not sure it is enough to make a difference.

 

[bcavalli]

grouper therapy;1078564 wrote: Turn it off one night and see if it makes a difference. I have on mine and it does drop. Not saying it will but it would be interesting to see if yours does. Uv s do produce some ozone but im not sure it is enough to make a difference.

I'm really interested to find that out as well.