Disolved Oxygen in our Reeftanks - Who else measures it ???

[Subsea]

After all the chasing of numbers. What really determine successful, healthy, thriving reef tank is happy, healthy, sex crazy, corals.
Your children of the sea will show you that. IMO

I am with Jomama on this one. I don’t measure anything. Remember “Laissez Faire”.

 

[Dr. Dendrostein]

@Subsea
Laissez les bonne temps roulee

Using my latin, let's see,

Laziness, let's good times roll?

Correct me please

 

[Dr. Dendrostein]

Found it
Let the good times roll

 

[Subsea]

Found it
Let the good times roll

Thank you. For certain I enjoy fun. The jest of this Cajun phrase is “Don’t sweat the small stuff and enjoy life while you are doing it”.

 

[Cruz_Arias]

Doesn't a nitrate reactor use primarily anaerobic bacteria? Meaning it would strip less Oxygen from the water?

This is the main reason I have two 25 watt UV sterilizers for a 180, to improve redox.

The binding of NO3 requires utilization of an available form of oxygen.
REDOX (Reduction Oxidation) is very different than AVAILABLE OXYGEN (O2 GAS)

 

[Cruz_Arias]

Following. Great topic.

I wonder if a group of people who aimed at making their tanks as ultra quiet as possible; with the drains below water level in the sump, and returns below water level up top and everything else done to reduce noise and splashing took readings and compared to another group with a much more “ airaited” or noisy setup. How they would stack up

EC Noticed that at the overflows and down drains started getting quieter and quieter (over many years) the worse degassing became.

The hold up of CO2 in the water column still remained higher than with the older "Toilet flushing" sound from the older style down spouts.

CO2 has a higher affinity to stay dissolved in water than O2, meaning that any agitation or surface tension disturbance will allow for more degassing of available oxygen.
Agitation is non-discrimantory in which gases get released.

 

[Malcontent]

In previous studies at intensive fish aquaculture using air bubbles, the vast majority of the gas exchange happens at the water surface.

Citation?

 

[Malcontent]

Unless hardware has changed dramatically, both probes need frequent service with oxygen probe failure much more frequent because of membrane degradation.

Luminescent sensors are relatively new and have several advantages over traditional sensors.

 

[Subsea]

Citation?

Interesting handle.

Information cited was from Aquatic Eco-System 2014 Master Catalogue, Tech Talks. Pretty sure research done by Florida Aquaculture Department.

What was the question?

 

[Mortie31]

I’ve been recording O2 levels for a few months now, from what I’ve seen so far surface agitation, seems to change the O2 levels the most, my skimmer, overflow and standard powerheads give me dissolved O2 levels of approx 90% however if I redirect powerheads the O2 will increase dramatically, If you prefer mg/l readings mine vary between 6.5 and 7.5 typically. I started dosing LaCl 2 weeks ago and there may of been a slight decrease but I’ve been removing my sand bed as well so figures unlikely to be attributable, but I’ll keep an eye on it.

 

[Malcontent]

Information cited was from Aquatic Eco-System 2014 Master Catalogue, Tech Talks. Pretty sure research done by Florida Aquaculture Department.

What was the question?

Can you provide a link? I haven't found any relevant tech tanks here.

 

[Forsaken77]

So after all the debate, what is the best way to oxygenate the water column?

From what people have said, CO2 is able to stay in the water more so than Oxygen and surface agitation is liable to gas off Oxygen more than CO2, plus the CO2 in the ambient environment can be pulled into the water more easily than Oxygen can.

Does surface area also play a role? Meaning, does a traditional rectangle tank have a better chance of higher Oxygen than a cube tank?

Just curious what is a definitive way to keep your tank oxygenated? Skimmers in a closed cabinet seem to recycle the air available. So what is a way to get Oxygen availability higher?

 

[Subsea]

So after all the debate, what is the best way to oxygenate the water column?

From what people have said, CO2 is able to stay in the water more so than Oxygen and surface agitation is liable to gas off Oxygen more than CO2, plus the CO2 in the ambient environment can be pulled into the water more easily than Oxygen can.

Does surface area also play a role? Meaning, does a traditional rectangle tank have a better chance of higher Oxygen than a cube tank?

Just curious what is a definitive way to keep your tank oxygenated? Skimmers in a closed cabinet seem to recycle the air available. So what is a way to get Oxygen availability higher?

There is no one definitive way to oxygenerate a tank. Water surface and surface agitation provide the balk of gas exchange. Deeper tanks decrease oxygen input as surface area ratio to volume decreases.

Can you provide a link? I haven't found any relevant tech tanks here.

I provided you with the source of the information. I suggest you call tech service at Aquatic Eco System if you want details. Google their telephone number if you are interested.

 

[Malcontent]

There is no one definitive way to oxygenerate a tank. Water surface and surface agitation provide the balk of gas exchange. Deeper tanks decrease oxygen input as surface area ratio to volume decreases.

I provided you with the source of the information. I suggest you call tech service at Aquatic Eco System if you want details. Google their telephone number if you are interested.

No, you didn't. All those "tech talks" are available online at the link I provided and none of them support your contention.

https://www.sciencedirect.com/science/article/pii/S0043135402005663

 

[Mortie31]

So after all the debate, what is the best way to oxygenate the water column?

From what people have said, CO2 is able to stay in the water more so than Oxygen and surface agitation is liable to gas off Oxygen more than CO2, plus the CO2 in the ambient environment can be pulled into the water more easily than Oxygen can.

Does surface area also play a role? Meaning, does a traditional rectangle tank have a better chance of higher Oxygen than a cube tank?

Just curious what is a definitive way to keep your tank oxygenated? Skimmers in a closed cabinet seem to recycle the air available. So what is a way to get Oxygen availability higher?

In the very limited tests Ive conducted, surface agitation seems to increase O2 levels, here’s discussion from a few weeks ago
https://www.reef2reef.com/threads/surprising-o2-saturation-levels.409681/

 

[Subsea]

No, you didn't. All those "tech talks" are available online at the link I provided and none of them support your contention.

https://www.sciencedirect.com/science/article/pii/S0043135402005663

Your handle suits your verbage. Information is there. I am not here to spoon feed you.

 

[Subsea]

I’ve been recording O2 levels for a few months now, from what I’ve seen so far surface agitation, seems to change the O2 levels the most, my skimmer, overflow and standard powerheads give me dissolved O2 levels of approx 90% however if I redirect powerheads the O2 will increase dramatically, If you prefer mg/l readings mine vary between 6.5 and 7.5 typically. I started dosing LaCl 2 weeks ago and there may of been a slight decrease but I’ve been removing my sand bed as well so figures unlikely to be attributable, but I’ll keep an eye on it.

You mentioned removing your sandbed. Considering bacteria consumption of oxygen 24/7, do you expect oxygen concentration to increase in your system after removing bacteria in the sandbed?

https://www.reef2reef.com/threads/sochting-oxidator-advice-needed-please.283145/

 

[Subsea]

So after all the debate, what is the best way to oxygenate the water column?

From what people have said, CO2 is able to stay in the water more so than Oxygen and surface agitation is liable to gas off Oxygen more than CO2, plus the CO2 in the ambient environment can be pulled into the water more easily than Oxygen can.

Does surface area also play a role? Meaning, does a traditional rectangle tank have a better chance of higher Oxygen than a cube tank?

Just curious what is a definitive way to keep your tank oxygenated? Skimmers in a closed cabinet seem to recycle the air available. So what is a way to get Oxygen availability higher?

https://www.onlineaquariumspullen.nl/en/technics/soechting-oxydator/
While I have never used this equipment, many European hobbiest use it.

 

[Malcontent]

Your handle suits your verbage. Information is there. I am not here to spoon feed you.

If your references can't be found by the public then they're highly suspect.

Several scientific studies have concluded that bubble transfer is greater than surface transfer. I have provided references, you have not.

It's a disservice to the hobby to perpetuate these myths.

 

[Mortie31]

You mentioned removing your sandbed. Considering bacteria consumption of oxygen 24/7, do you expect oxygen concentration to increase in your system after removing bacteria in the sandbed?

https://www.reef2reef.com/threads/sochting-oxidator-advice-needed-please.283145/

I have absolutely no idea tbh, the tank is 6.5yrs old and the bed had built up behind and under rockwork, so I decided to remove it, to remove detritus build up and improve the water flow, I’m hoping to see an improvement in water quality and it will be interesting to see if O2 levels increase following this improvement.