ORP question

[DrBDC]

I think something is wrong but I'm ordering some calibration solutions to verify. I'm getting an ORP reading that tops at 408 today with a drop about 20 as the day goes on. I do do a lot of water changes and have macro growing well and a sump bigger than the main tank. But,,,,, I can't be that high. I'm not using the pH compensation or it would be in the 460's.

I'm NOT using ozone injection yet either.

I do have an ozone generation air purification unit in my sump room which produces 565 mg/hour but 1 of the 2 plates are removed giving about 280ish. This is in the whole room which has ventilation due to the furnace in there and when my 1 1/2 y/o is in bed or napping I have the door open too. The only way that ozone would be getting in is from my cc skimmer linear piston air pump drawing from the room and from surface agitation of the stock tank sump and of course where the overflows hit the waterline. I can't imagine much from that though. Maybe 10 mg/hour or could I just be underestimating how much is making it to the water from the atmosphere and air pump?

I've just hit the 2 week mark tomorrow so it should be just about settled in and I haven't seen much upward change in the last couple days maybe an increase of 5 in the peak. It started about mid 200's and I've gradually rose over the two week period. In two weeks I can't have a dirty probe yet or ??

 

[Bill and Elaine]

You need to soak you probe in vinegar...ONCE A WEEK !...I bet it goes down after you clean it......mine did......from 415 to 300

 

[DrBDC]

That seems like a frequent cleaning! I did it last night and it dropped to 273 right after putting back in the tank and I'm at 308 this morning. Thanks for the tip. At least it drifts up instead of down where if ozone were being injected that could be a bad thing to keep pumping it in nonstop.

 

[Randy Holmes-Farley]

I do have an ozone generation air purification unit in my sump room which produces 565 mg/hour but 1 of the 2 plates are removed giving about 280ish. This is in the whole room which has ventilation due to the furnace in there and when my 1 1/2 y/o is in bed or napping I have the door open too. The only way that ozone would be getting in is from my cc skimmer linear piston air pump drawing from the room and from surface agitation of the stock tank sump and of course where the overflows hit the waterline. I can't imagine much from that though. Maybe 10 mg/hour or could I just be underestimating how much is making it to the water from the atmosphere and air pump?

You are just adding ozone into the room? Why?

 

[DrBDC]

Not necessarily for the room itself, it is a whole house air purification unit. I need to move it into a cold air return or near it.

 

[Randy Holmes-Farley]

Huh. I don't really have any idea how much makes its way to the tank when just pumped into a room. That sounds unhealthy to me.

 

[DrBDC]

I'll send you a pm with some links sometime. I'd rather not post it here right now. Maybe it will tie in with something for your articles.