Originally Posted by JohnM
Delta presents very interesting oxygenation technology that’s out of the box so to speak for the average hobby grower, thanks for joining my thread delta. I appreciate your comments.
Cones are a neat way to dissolve O2 gas to supersaturation levels into warm water fast and efficiently. Totally eliminates and all Low DO problems, root suffocation, fungal outbreaks, all gone forever. Cones dissolve much more O2 gas far better than water chillers, water falls, hypothermia and 100 bubbles stones running continuously bubbling tons of ambient air.
Do you have any pics or videos of this thing used in a grow? Doug will want to see pics and videos… that is the proof that cones really increase the DO to high supersaturation levels… just kidding Doug, playing around.
Of course a DO meter is necessary to actually prove the effectiveness of any cone, bubble stone, water fall or air pump.
no, i've never used one in a grow and don't know of anyone who has but 10 years ago, when i was running bio-buckets, i was going to build one and actually got to the drawing and parts stage before i changed techniques.
i think it would be quite simple to build a small one out of maybe a small traffic cone with some pvc fittings at the top. maybe a gas injection jet of some kind. i think you establish water flow first then dial in o2 flow rate so that no bubbles are emerging from the bottom of the cone.
adequate plant o2 is adequate o2 and no more is needed nor will excess o2 "turbocharge" a plant.
the trick in dwc is to not let the bio-demand for o2 deplete the do much past what the water would normally hold under whatever ambient conditions you have. so going for "max" dissolved o2 levels is not going to get you any further than adequate do levels.
but no water at any saturation level can compete with ambient air when it comes to plant available o2.
two containers the same size, one filled with water with o2 content dictated by atmosheric partial pressure, and the other filled with ambient air at the same altitude and temperature.
the container of air will have approximately 23,300 times the free o2 molecules.