Anyone using Dr. Sochting's Oxydator

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PeterC99

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Just got my first Oxydator A from The Shrimp Tank! Setup with diluted 6% hydrogen peroxide and one catalyst to get started.

After 4 days, noticing my cyano receding. Wondering when I can use stronger strength HP and another catalyst?
 
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Lasse

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The ORP value tell you if there is either oxidative or reducing processes that is active. If it is over 0 - the oxidative processes dominate and the opposite if the reducing processes dominate. From the books

Oxidation occurs when a reactant loses electrons during the reaction. Reduction occurs when a reactant gains electrons during the reaction.

These processes happens all the time and it is the sum of these reactions that you see as the ORP potential. In a natural system - you can never distinct exactly what happens. If you in a natural system have an ORP of 450 - IMO - you are not in danger. However - if you in a natural system with ORP around 300 or lower put in a highly oxidative compound like Ozone and the ORP rise up to 450 - you can be in danger because Ozone will break down into oxygen radicals that affect biological life. De facto - Ozone can be dangerous in lower ORP to - if that is mainly the Ozone that is responsible for the ORP value. Therefore - rise ORP slowly with Ozone. If your normal ORP is around 300 - you maybe should rise it to 320 with Ozone and stop there for a while and after that adjust slowly up to 360 - 400 mV.

Peroxide is more tricky - if you add this - your ORP will in the first moment dip and IMO - it is because the H2O2 lose its extra O and oxygen radicals is formed. When they start to oxidize different substances - the ORP will rise but the dangerous oxygen radicals will be depleted. Hence - if you see a radical dip when adding peroxide - it could be to much breaking down to fast. Oxydators is a good tool to note do local overdoses. Often - when you start with new filled containers - you will see a dip and after that the redox potential will rise with time - this is the last time I load my oxydator. Note the daily swings that is opposite synced with the pH.

1618340179132.png



A closer look. The read marking shows the ORP when my oxidator is empty - no peroxide in it. The dip - just filled with 11 % H2O2 and 3 catalyst. Blue - the redox with 11% H2O2 and 3 catalyst. I took around a day after the dip - after that back to the normal levels. as you can see not huge difference in the ORP with and without 11 % peroxide in the oxydator

1618341002241.png



ORP is a fruit measurement - you know its fruit but not which type of fruit.

Another experiences - redox probes take some time before they adapt if they are in another solution or up in the air. If I clean my electrode - it will take 2-4 days begore it is in normal condition again.

I do not think you need to worry to much with 3 % and 2 catalyst. The ORP does not have the same importance with peroxide as it has with ozone - IMO

Sincerely Lasse
 

David S

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The ORP value tell you if there is either oxidative or reducing processes that is active. If it is over 0 - the oxidative processes dominate and the opposite if the reducing processes dominate. From the books



These processes happens all the time and it is the sum of these reactions that you see as the ORP potential. In a natural system - you can never distinct exactly what happens. If you in a natural system have an ORP of 450 - IMO - you are not in danger. However - if you in a natural system with ORP around 300 or lower put in a highly oxidative compound like Ozone and the ORP rise up to 450 - you can be in danger because Ozone will break down into oxygen radicals that affect biological life. De facto - Ozone can be dangerous in lower ORP to - if that is mainly the Ozone that is responsible for the ORP value. Therefore - rise ORP slowly with Ozone. If your normal ORP is around 300 - you maybe should rise it to 320 with Ozone and stop there for a while and after that adjust slowly up to 360 - 400 mV.

Peroxide is more tricky - if you add this - your ORP will in the first moment dip and IMO - it is because the H2O2 lose its extra O and oxygen radicals is formed. When they start to oxidize different substances - the ORP will rise but the dangerous oxygen radicals will be depleted. Hence - if you see a radical dip when adding peroxide - it could be to much breaking down to fast. Oxydators is a good tool to note do local overdoses. Often - when you start with new filled containers - you will see a dip and after that the redox potential will rise with time - this is the last time I load my oxydator. Note the daily swings that is opposite synced with the pH.

1618340179132.png



A closer look. The read marking shows the ORP when my oxidator is empty - no peroxide in it. The dip - just filled with 11 % H2O2 and 3 catalyst. Blue - the redox with 11% H2O2 and 3 catalyst. I took around a day after the dip - after that back to the normal levels. as you can see not huge difference in the ORP with and without 11 % peroxide in the oxydator

1618341002241.png



ORP is a fruit measurement - you know its fruit but not which type of fruit.

Another experiences - redox probes take some time before they adapt if they are in another solution or up in the air. If I clean my electrode - it will take 2-4 days begore it is in normal condition again.

I do not think you need to worry to much with 3 % and 2 catalyst. The ORP does not have the same importance with peroxide as it has with ozone - IMO

Sincerely Lasse
Thanks for the info Lasse
I was intending on waiting 2 days for the ORP to normalize. To be on the safe side, I'll wait four.
Just one thing:
How much of an initial decline in ORP is something I should be concerned about?
If the decline is great, would I remove Oxydator or might I dilute the H2O2?
Thanks
David
 

Lasse

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If you have the an event like I show in my graph - no concern. But - by mistake - I once dosed 25 ml 12% H2O2 into my aquarium - it took 20days to recover the same ORP value. The corals reacted strongly the first days but recover very well. From 425 to 287 mV, The blue marks is filling of the oxydator

1618390474069.png

Sincerely Lasse
 
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moreef

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5 day update and all I can say is WOW!!!! I was only able to use 3% while I wait for stronger to be delivered but I already have a big die off of my cyano on sandbed. I really just got this for overall health of tank/fish but didn’t know it would also help with cyano. I haven’t tested o2 yet but will this week sometime.
 
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fishybizzness

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I have a question. I am running a w model on my 120 and I checked the container this morning and it still had a little less than 1/4 peroxide left in it after around5 weeks since last refill. I run 2 catalyst and use 12% peroxide. My question is, does the peroxide weaken as it is used up and would it make sense to throw out the small amount left and refill with fresh peroxide? Also, I am wondering if I can add another catalyst to keep the dosage more consistent. It seems like the peroxide is taking a long time to be used up.
 

fishybizzness

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A week or two is normally perfect. Yes it get a little bir weaker but not very much. Of no practical concern IMO

Sincerely Lasse
Would adding a third catalyst be beneficial or should I just stick with the 2?
 

David S

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Update:
Had waited almost 3 days and found ORP stabilized to 273 - 316 mv range in that timeframe.
Accordingly, I decided to begin use of the Oxydator.
I am starting with a 3% solution with a single catalyst in a "D" Oxydator.
ORP at the time of addition was 305 mv. It shot up to 370 mv within minutes.
Since then, the ORP is in a 360 - 370 range.
No discernible effect on corals.
It could be my imagination, but my Yellow Tang and Flame Angel seemed quite active as I approached the tank. Apparently, they wanted to be fed. Unusual, considering I had fed them just prior to the addition of the Oxydator - usually they become somewhat complacent after eating.
Will monitor.

Screenshot_2021-04-15-11-07-09.png
 

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