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Oxygen saturation at Altitude!!! ATTN MTN GROWERS!

M

macdiesel

Member
If you're in the mountains running hydro, check this chart out. Kinda scary, even if we keep our temps down. Please add any comments you might have! Thanks

caljsiol_sio1ca175_107_014.gif
 
D

delta9nxs

No Jive Productions
Veteran
you could use a hydroponic system that does not rely on waterborne free oxygen molecules but instead uses ambient air as an oxygen source.
 
M

macdiesel

Member
delta9nxs said:
you could use a hydroponic system that does not rely on waterborne free oxygen molecules but instead uses ambient air as an oxygen source.
Click to expand...

Do you think that high altitude ambient air is equal in o2 compared to ambient air at sea level?

There has to be a difference in o2 saturation in the h2o
 
D

delta9nxs

No Jive Productions
Veteran
macdiesel said:
Do you think that high altitude ambient air is equal in o2 compared to ambient air at sea level?

There has to be a difference in o2 saturation in the h2o
Click to expand...

no, you are correct that high altitude air will not have the same free o2 content as sea level air and that is why non aerated fresh water with no bio demand on it produces the figures in your chart at whatever altitude and temperature.

what i suggested was using a hydroponic device that does not depend on the water in the system to deliver the plant o2 but instead pulls the o2 directly from the air.

and limits the amount of root growth into the solution thereby limiting the bio demand which causes o2 depletion in a fast moving hydro system.

of course this is just another shameless plug for the ppk system that you may have seen mentioned around here but it would definitely solve the low dissolved o2 problem.

the system also does not need chillers for the same reasons. i run my res water at 80-84f all the time with no rot and fast growth.

good luck!
 
M

macdiesel

Member
delta9nxs said:
no, you are correct that high altitude air will not have the same free o2 content as sea level air and that is why non aerated fresh water with no bio demand on it produces the figures in your chart at whatever altitude and temperature.

what i suggested was using a hydroponic device that does not depend on the water in the system to deliver the plant o2 but instead pulls the o2 directly from the air.

and limits the amount of root growth into the solution thereby limiting the bio demand which causes o2 depletion in a fast moving hydro system.

of course this is just another shameless plug for the ppk system that you may have seen mentioned around here but it would definitely solve the low dissolved o2 problem.

the system also does not need chillers for the same reasons. i run my res water at 80-84f all the time with no rot and fast growth.

good luck!
Click to expand...

Well, perhaps I'm reading the chart incorrectly. I'm under the impression that is all the o2 water will hold at those altitudes but perhaps the disconnect is that the water may hold more o2 if it's aerated?

btw ppk looks awesome, but I'm all in on a few rdwc systems. ;)
 
T

TheCleanGame

Active member
Veteran
delta9nxs said:
no. the chart is correct and he was reading it correctly.
Click to expand...
You guys are funny. :laughing:

The chart is correct for 'fresh' water that's non-aerated. It does NOT apply to aerated water at altitude and I know this for a fact.

How do I know? LOL, I live at 10,000 feet and run DWC with the same setups I ran at 1,200 feet (10,000 feet is a full 2 miles above sea level... in case you didn't know).

If low oxygen is a problem at altitude, my plants sure haven't shown any signs of it. Anyone having issues with this either doesn't have a large enough air pump or they have other problems not related to altitude/pump-size.

Be good to yourself
 
D

delta9nxs

No Jive Productions
Veteran
TheCleanGame said:
You guys are funny. :laughing:

The chart is correct for 'fresh' water that's non-aerated. It does NOT apply to aerated water at altitude and I know this for a fact.

How do I know? LOL, I live at 10,000 feet and run DWC with the same setups I ran at 1,200 feet (10,000 feet is a full 2 miles above sea level... in case you didn't know).

If low oxygen is a problem at altitude, my plants sure haven't shown any signs of it. Anyone having issues with this either doesn't have a large enough air pump or they have other problems not related to altitude/pump-size.

Be good to yourself
Click to expand...

did i say something that was incorrect?
 
D

delta9nxs

No Jive Productions
Veteran
well mr "be good to yourself". are you the pimp or the game today? which entity am i addressing?

quote my incorrect statement and explain why it was wrong!
 
N

NEGT1

Member
It seems you are suggesting that aerated water at a high level still cannot hold proper amounts of oxygen...no? That's seemingly not true. No you didn't say that, but you sold it.
 
J

JohnM

Member
Fear not - just fix it

Fear not - just fix it

macdiesel said:
If you're in the mountains running hydro, check this chart out. Kinda scary, even if we keep our temps down. Please add any comments you might have! Thanks

View Image
Click to expand...
Actually, the ambient oxygen concentration in air at elevation (in the Rocky Mountains or Mt. Everest) is the same as the ambient oxygen concentration at sea level – but the oxygen tension (partial pressure) in that ambient air is very different at elevations.
You fix the problem your talking about exactly like the Everest climbers fix that oxygen problem – with supplemental oxygen that is greater than the oxygen concentration in ambient air.
The solution to your problem is very simple. There’s no need for “SCARY” at all when you really understand the matter and how to fix it. Just fix it.
Scary goes away with knowledge and understanding - read this - How much oxygen will there be at Mount Everest? http://www.adlers.com.au/oxygen.php
 
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