Ben Derdundat
- 162
- 18
im sorry if this is a stupid question but the values ben posted are these MAX values?
I believe that is an unairated measurement. The airation for a short period of time raise this value but only or a short time which is why you need to constantly airate and airate in every bucket. At least that is my understanding.
so your saying added levels of o2 cant be added to these numbers papa?
"Saturation Levels" means that's as much oxygen as you can get dissolved into water . . . (at sea level, i believe). those are the numbers that we are attempting to get as close as possible to.
google "dissolved oxygen site:www.thcfarmer.com" and you will find many threads that discuss this.
i'm still looking for someone with a DO meter and a UC or MPB system to give us some actual data. fatman claimed to have an entire shelf of DO meters . . . but couldn't stay unbanned long enough to give us numbers.
Papa
Should we presume that these values are for pure (or relatively pure) water, though? Saturation levels of other compounds affects DO2 levels in my experience (aquatics, not hydroponics). For instance, you'll never achieve the same DO levels in saltwater, even chilled down to 32F, that you do in freshwater.
Has anyone created a data set for DO levels in a hydro set-up?
That scale Ben posted is most likely based on low (50ppm or less, possibly even RO) water......high amounts of dissolved solids most definitely reduce waters ability to hold oxygen in suspension.
This is one of the main advantages to running lower nute concentrations.....keep your DO high as possible and your PPM's only as high as necessary to meet your plants nutritional needs.
Thanks for sharing that D.O. scale Ben.
Disclaimer.....I make real world observations, I'm not a scientist....I'm a farmer.
Sounds like you might have a little of both running through your blood my friend... bd
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