Lets talk water!

RikoSuave55

RikoSuave55

Active Member
Water is H2O = one molecule of water has two hydrogen atoms covalently bonded to a single oxygen atom.

Heres a couple observations and questions.

oxygen bubbles are essential to any DWC or Bubbleponics grows. I accidently unplugged my bubbler overnight once and i killed a plant and the others were pissed. I dont uderstand why that happens so fast in a bubbleponics system. I realise the bubbles themselves are extra qxygen but doesnt the water itself have oxygen in it enough to keep a plant going....... Why not?

My bubbleponics salesman likes to use the term "super oxygenate" as in buy an extra air stone for your res and super oxygenate your water. Once again i understand that bubbles collect on the res walls and also burst around the roots, but can water itself be forced to hold more oxygen? I read the other day that there is a maximum amount of oxygen water can hold. I dont get that. can water ever be more than H2O with oxygen bubbles in it?

So if you have fish and you turn off the bubbler. A few days later theyll die or get sick from oxygen deprivation... HOW? Isnt there still one atom of oxyegen for every two of hydrogen. And if you have a bubbler blowing bubbles in the far right corner of the tank and you have a fish that stays on the left, how is he benefitting from the bubbles that go from the bubbler to the surface?

Okay and i really wonder that if water in a tank was low on oxygen , why wouldnt it just be hydrogen? I mean to say if a fish is in a small cup lets say and it respirates all of the oxygen do you then have a cup of hydrogen?

I guess most of these questions have to do with me not understanding how water can be oxygenated, super oxygenated, and then oxygen deficient.

If water retained oxygen i would think we could see it as bubbles. And if that is sohow does a fish benefit from bubbles passing through water from a distance?

Any water experts out there
 
dam612

dam612

Well-Known Member
Although most pet stores will ask u to buy an airstone it is not required bc most have a point of overflow where the water is churned up alot and o2 can get mixed in as the water tumbles as DO and like u said there is already a bunch in the water itself (dissolved oxygen DIFF then the bubbles that rise and burst). fish tanks are always held slightly basic too bc ph is the measure of hydrogen atoms in the liquid (power of hydrogen, runs neg so 10^-1[H+]=ph1) at ph 7, H+ ions are in equilibrium with the OH- ions(10^-7...Dissolved oxygen). As you decrease in acidity the [H+] increases so less [OH-], when your system is basic [OH-] is dom and [H+] is lacking sooo the more basic has more oxygen available in the water. Gaseous samples can enter liquid efficiently by decreasing the temp or increasing the pressure on the system. Take a bottle of soda, mostly water sugar and carbonic acid (co2 acid like, h2co3 i think...). When you open a bottle of cold soda a slight pressure change is noticed and just a fizz will appear as the gas wants to leave the now open system, but open up a bottle of soda thats been sitting in the sun and it will explode violently bc the gas wants to leave this environment greater then the cold bottle. Kinda confused on what ur asking but here some basic principals or water and the conditions that allow for more o2 absorption in the system. I hear adding some sodium free seltzer could fortify your system but havent done this so i wouldnt imply it full scale unless someone else back it up. Sorry for the long explanation but im a chemistry maj in college and thought i spread a lil knowledge with ya.
 
stowandgrow

stowandgrow

Active Member
dam612 said:
Although most pet stores will ask u to buy an airstone it is not required bc most have a point of overflow where the water is churned up alot and o2 can get mixed in as the water tumbles as DO and like u said there is already a bunch in the water itself (dissolved oxygen DIFF then the bubbles that rise and burst). fish tanks are always held slightly basic too bc ph is the measure of hydrogen atoms in the liquid (power of hydrogen, runs neg so 10^-1[H+]=ph1) at ph 7, H+ ions are in equilibrium with the OH- ions(10^-7...Dissolved oxygen). As you decrease in acidity the [H+] increases so less [OH-], when your system is basic [OH-] is dom and [H+] is lacking sooo the more basic has more oxygen available in the water. Gaseous samples can enter liquid efficiently by decreasing the temp or increasing the pressure on the system. Take a bottle of soda, mostly water sugar and carbonic acid (co2 acid like, h2co3 i think...). When you open a bottle of cold soda a slight pressure change is noticed and just a fizz will appear as the gas wants to leave the now open system, but open up a bottle of soda thats been sitting in the sun and it will explode violently bc the gas wants to leave this environment greater then the cold bottle. Kinda confused on what ur asking but here some basic principals or water and the conditions that allow for more o2 absorption in the system. I hear adding some sodium free seltzer could fortify your system but havent done this so i wouldnt imply it full scale unless someone else back it up. Sorry for the long explanation but im a chemistry maj in college and thought i spread a lil knowledge with ya.
Click to expand...
Look at the big brain on dam!! Good stuff my man!
 
Q

quimby

Member
I think what you have is a lot of water molecules and oxygen is dissolved in the water when oxygen is used you are not breaking down the H2O. Cooler water will hold more dissolved oxygen. The dissolved oxygen is floating around in the water.
 
doc111

doc111

Well-Known Member
RikoSuave55 said:
Water is H2O = one molecule of water has two hydrogen atoms covalently bonded to a single oxygen atom.

Heres a couple observations and questions.

oxygen bubbles are essential to any DWC or Bubbleponics grows. I accidently unplugged my bubbler overnight once and i killed a plant and the others were pissed. I dont uderstand why that happens so fast in a bubbleponics system. I realise the bubbles themselves are extra qxygen but doesnt the water itself have oxygen in it enough to keep a plant going....... Why not?

My bubbleponics salesman likes to use the term "super oxygenate" as in buy an extra air stone for your res and super oxygenate your water. Once again i understand that bubbles collect on the res walls and also burst around the roots, but can water itself be forced to hold more oxygen? I read the other day that there is a maximum amount of oxygen water can hold. I dont get that. can water ever be more than H2O with oxygen bubbles in it?

So if you have fish and you turn off the bubbler. A few days later theyll die or get sick from oxygen deprivation... HOW? Isnt there still one atom of oxyegen for every two of hydrogen. And if you have a bubbler blowing bubbles in the far right corner of the tank and you have a fish that stays on the left, how is he benefitting from the bubbles that go from the bubbler to the surface?

Okay and i really wonder that if water in a tank was low on oxygen , why wouldnt it just be hydrogen? I mean to say if a fish is in a small cup lets say and it respirates all of the oxygen do you then have a cup of hydrogen?

I guess most of these questions have to do with me not understanding how water can be oxygenated, super oxygenated, and then oxygen deficient.

If water retained oxygen i would think we could see it as bubbles. And if that is sohow does a fish benefit from bubbles passing through water from a distance?

Any water experts out there
Click to expand...
The Oxygen in the H2O molecule is bound to the Hydrogen and therefore isn't in solution. Dissolved Oxygen is Oxygen which is not bound to a Hydrogen atom and comes, primarily, from 2 sources. Photosynthesis, and air. Fast moving streams typically contain much more dissolved Oxygen than a stagnant pond. This is because of the rapid movement of a lot of surface area of water coming in contact with the air where some Oxygen is picked up from it. Algae living in bodies of water also give off Oxygen via photosynthesis which some of becomes dissolved in water. It is true that water will hold a finite amount of dissolved Oxygen. This is dependent on the volume, surface area, temperature and atmoshpheric pressure. By using an airstone you are running many bubbles of air which contain atmospheric Oxygen in the amount of approximately 20.9% past a volume of water. The bubbles which make it to the surface are what didn't dissolve in the water. A tiny amount of each bubble does manage to become dissolved in your water. You can't see it but it's there. The Dissolved Oxygen doesn't simply stay suspended in the water at that point. It is constantly moving, kind of like it does in air. The molecules in a liquid are moving slower than they are in gaseous state but they are still moving. Same with a solid; the molecules are moving, just slower than in a liquid. Click on the link in my sig if you want to learn more about water. Hope this helps.:weed:
 
I

IMO

Active Member
if youre really interested in super oxygenating water you should look into venturi pumps. :)
 
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