Midwestjay
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You sure did - http://www.otabs.com/Did I miss where someone is using O-Tabs, or, where to buy them?
So I chased this down. My hydro store doesn't carry it. I went to a bait shop who does. Each 'tablet' comes in a small tin about 4 stacked quarters high, but they are only good for 1-1.5hours. Hows does that help?
I also temialedd the link you provided but have not heard back
Don't forget the additional 10% CO2 O-Tab produces along with the 90% oxygen... if you like or use CO2... that's a 10% free-be at no extra cost, like a little extra treat.$1.59. I didn't buy any as it would be a waste of money for <2 hours use. He asked me how big was my bait bucket, I said 2 gallons. That may be the problem compared to a small (<1g) bait bucket
I hope you are right and the bait shop owner is wrong. Digging into Otab site they say 5+ hours, which would be fine, 10 obviously better
Looked exactly like the one on
otab www.
Behold some new avenues of basic chemistry to explore, I really like the new techy stuff, applying the cutting edge stuff solidly that is based in hard science and horticulture. Think beyond the boundries that other try to impose on you and thrive. "Show me, don't tell me."@J Henry thanks for the kind words.. I appreciate it.
I have a great deal of respect for your contributions. :)
Don't forget the additional 10% CO2 O-Tab produces along with the 90% oxygen... if you like or use CO2... that's a 10% free-be at no extra cost, like a little extra treat.
How much do roots and plants need to really thrive? How much do all the microbial colonies need? And the big one - how much O2 is needed to inhibit fungal opportunist outbreaks?Searched Amazon. The comments under similar items was helpful. Here's one, how does the Otab stay on the bottom of the rez?
The standard amount of oxygen which should contain in a fish tank is 6 mg of oxygen per 1 litre of water. Greater amount than this would be better..........
Begs the question... how much does roots need?
Or blast with air pumps and use hydroguard and not worry at allHow much do roots and plants need to really thrive? How much do all the microbial colonies need? And the big one - how much O2 is needed to inhibit fungal opportunist outbreaks?
The answer to your "big question" is 100% DO Saturation or greater continuously or even better is DO Supersaturation >100% DO saturation continuously.
Now you know the answer to "how much." The next bigger question then is how are you going insure continuous 100% DO Sat 27/7 for a growing season? Can't do this with air, now what?
Of course growers disregard all this stuff as meaningless and just hope the crop won't catch the root rot. If the O2 gets low and the root rot attacks, treat the disease with chemicals when the roots get slimy and deal with the little set-back.
Looks can be very deceptive. What is saturated water? What does water that is saturated actually look like to you? What does water that is unsaturated actually look like to you? How can you really tell the difference between water that is saturated or not saturated by looking at the water?well, looking at the OTab video one Otab doesn't look like it 'saturates' much of the water in the vessel at all (just a few tiny bubbles heading toward the surface directly above it=not saturating), let alone > 2gallons. One would likely need many multiples to cover the surface area in the bubbler or rez
Seems like it is not cost effective, but I'm willing to listen
Exactly like this – Google “Henry’s Gas Law” and "Diffusion"When the bubbles travel straight up, how exactly can they be influencing the surrounding water?
How about showing us your grow using these?
I hear you saying and understand – water chillers, cold water and air (aeration, 20% O2) is your oxygenation limit. Oxygen generators that generate 93% O2 cost about the same and expands your oxygenation limits exponentially. Is your goal cold water or preventing low oxygen crisis? If cold water provided plenty of dissolved oxygen and prevent low oxygen crisis, there would be no root rot problems.I really want to try these, but....
You can buy chillers for ~ $250, which will outlast $250 worth of Otabs (from what I can see will only last a few months in a 2G tote/bubbler) many fold
Yes, your right, ambient air is completely different than water (a gas and a liquid) and yes, gas molecules will diffuse from a higher tension to a lower tension whether the room has a ceiling or doesn’t have a ceiling. Google – “Diffusion”Surrounding air is completely different than water. You are correct IF the room is sealed. If the room is open (no ceiling) the oxygen will escape rather than fill the room
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