Liquid Oxygen

TheDude007 said:

Wow some really off information here...
...adding 3% to a res is totally ineffective. It will break down in minutes and won't effectively kill all bacteria in a res because it's already so dilute. It also won't add much oxygen to your water..

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I'm not trying to provide 'off information', just offering personal experience, not advice. First, almost everything you put in your resivoir is 'effective' in some way. I've done deep water culture for more than 8 years. I've always dealt with problems when applying too frequeny or too highly concentrated doses of h2o2. There is a root rot that developes from too much h2o2. It smells similar but different than standard root rot. Just be careful that you don't over-dose the girls. I remember overdoing the h2o2 in (3%), ,,the plants would seem to thrive for a couple weeks and then slowly but surely head downhill.

An important fact to remember is that roots are organic too and h2o2 does not discriminate. It bio-oxodizes organic material.

Here's an artice from Science Hydroponics that explains it a little better...

"So what should a concerned grower do about the incredible problem of algae growth ? Nature has given us part of the answer in the form of a powerful oxidant called hydrogen peroxide. This molecule, whose formula is basically H2O2 decomposes forming molecular oxygen and water. It also reacts with organic matter in a redox reaction to oxidize it. In other words, algae and hydrogen peroxide cannot coexist.
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However, there is an important problem that arises when using hydrogen peroxide. It does not discriminate between roots and algae so using more than the optimum amount leads to plant root death caused by the same quality that kills algae. So what is this optimum amount ?
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I would love to show you a peer reviewed article that studied this issue but, as a matter of fact, no one has actually studied the levels at which these conditions are right at a scientific level. Most of what we know is currently empirical. Nonetheless, I have – from personal experience- verified that the application of 1mL of hydrogen peroxide (3% v/v) per liter of nutrient solution every week does seem to prevent algae and does not damage plant roots."

So you see, we have a broad range of opinions, from forum users to scientists. If I study longer, I would surely find articles to support everyones theory as different as they all may be.. Whatever you do, have fun.

Almost forgot. Cool temps, air stone, NO LIGHT exposed to water, usually keeps my bubblers clean and oxygen is plentifull.

Becareful with concentrated peroxide. Wear safety glasses/goggles.

cheers sinkingstone

Thedude is correct, hydrogen peroxide (3%) breaks down and becomes inneffective after about 10-15 minutes, u can use it but u need to add more frequently. With h2o2 from the hydro store its balanced correctly for plant needs, hydrogen peroxide is balanced for human needs, therefore providing different chemicals that are harmful to the plant, that's why when you add to much hydrogen peroxide ur roots can die. H2o2 from the hydro store with stay in ur resevoir much longer while continuesly fighting bacterias. Both are priced fairly in my opinion

I had problems with my gnats. After introducing h202 they went away.just be carefully not to over dose

HerbCultivator said:

its easy for me as grow shop only minutes away and its only £10 a ltr and i wouldnt no were to get h202 other than grow shop

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Health stores have it.

hydrobud1 said:

Thedude is correct, hydrogen peroxide (3%) breaks down and becomes inneffective after about 10-15 minutes, u can use it but u need to add more frequently. With h2o2 from the hydro store its balanced correctly for plant needs, hydrogen peroxide is balanced for human needs, therefore providing different chemicals that are harmful to the plant, that's why when you add to much hydrogen peroxide ur roots can die. H2o2 from the hydro store with stay in ur resevoir much longer while continuesly fighting bacterias. Both are priced fairly in my opinion

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Hydrogen Peroxide is not 'Balanced'. It's infinitely dilutable in water. That means it is active in any capacity that is is present. There are no other ingredients except Magnesium Sulfate or something metal based to stabilize the h2o2 for bottling. This is required for all h2o2 in any bottle, concentration or label. Magnesium Sulfate and it's substitute in microbial amounts is not harmful at all. Plants need it.
H2O2 is what it is. It's not an ingredient. It's a compound.

Root's die to over exposure to H2O2 products because h2o2 does not discriminate. It will 'eat' the roots when all other bio/organic substance has been devoured. It will also destroy any beneficial bacterials. It does not check I.D. it just eats. No other chemicals are in play.

can/should i use it in any way for my plants if I top feed? I use coco and canna coco nutes. I just harvested the tops of my plants but have left the bottom half cos I didn't lollipop quite enough and my scrog canopy was super dense. Now i'm left with a few ounces of unripened buds and exposed stem cuts. Not sure whether to foliar, add to top feed or just leave it out entirely.
Suggestions from anyone who is EXPERIENCED with H2O2 much appreciated.
H2O2 i've got is Growth Technology Liquid Oxygen 12%.
Cheers.

BlazedLeprechaun said:

can/should i use it in any way for my plants if I top feed? I use coco and canna coco nutes. I just harvested the tops of my plants but have left the bottom half cos I didn't lollipop quite enough and my scrog canopy was super dense. Now i'm left with a few ounces of unripened buds and exposed stem cuts. Not sure whether to foliar, add to top feed or just leave it out entirely.
Suggestions from anyone who is EXPERIENCED with H2O2 much appreciated.
H2O2 i've got is Growth Technology Liquid Oxygen 12%.
Cheers.

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you are replying to a 6 yr old thread. doubt they are even here anymore

HerbCultivator said:

Anybody used liquid oxygen? am using a 20ltr nft system and this is the first time i have used liquid oxygen. Just wondering if anybody has used it before and if it made any difference to your grow
cheers

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What made you think you needed to increase your DO dude?
Did you dream it, guess it, someone tell you that or did you confirm that in fact do have a real low DO problem by actually testing your res water DO and you discovered that your DO was unsafe and low?

Your DO could be fine, but how in the world would ever know that for sure unless you tested your DO with a scientific DO testing device or DO Chemical-strip?

Most hobby growers usually guess that their plants may need more oxygen or someone tells them the DO looks low or smells low. Or the DO is low man because your roots have died here, they are slimy and stink and they are rotting.

If you really know for sure that your plant roots and microbes need more oxygen, why not cut to the chase and just give them more oxygen vs. more air, harsh oxidizing chemicals (H2O2) or colder water all of which is pitifully ineffective when substantially increasing low res DO up to a “safe” DO saturation is the whole point of the oxygenation exercise.

So exactly how low was your DO Saturation crisis when you freaked out and dumped all that “Liquid Oxygen” or more precisely Hydrogen Peroxide into your res water? Did your res water foam-up with bubbles?

Here’s a great option that will actually fix or reverse a low DO problem without using H2O2 and killing all the microbes. This thread has also has been around and available for >7years so the fix is not something new.

Dig this dude.

Using Oxygen Generator to increase DO.

Discussion in 'Advanced Techniques & Problems' started by pacog, Jun 9, 2010.

https://www.thcfarmer.com/community/threads/using-oxygen-generator-to-increase-do.21102/page-6

MeJuana was posted August 12, 2010 on THC Farmer forum – >7 years ago.

A member from the forum which supports the system I grow in has a very high tech infuser.. I asked him about over saturation here's the response.

atlashomeric from Stinkbuddies forums
I checked out the link you posted for correction factors for Salinity concentration and Dissolved Oxygen content. The meter I use has an automatic internal salinity correction. It measures D.O. from 0 to 20 mg/L or ppm. However it's possible to calibrate the instrument to a -10 mg/L reading to measure the D.O. levels up to 30 mg/L. The reason that I'm sustaining 28 mg/L DO is because the device is constantly being fed by an O2 tank. The tank is a 40 lb. tank. The system is passive, using only 1 Cu Ft of O2 per day under a line pressure of 21 psi. The whole theory and design is based on Henry's law of pressure differences. To manipulate the law, the oxygen is ran through a porous tube at a much greater internal pressure than the external pressure (barometric + top pressure of the water). This allows for a true micro diffusion of gaseous O2 into solution with no bubbling, and therefore an almost stable O2 concentration. This concentration of DO can hold fairly stable as long as the water isn't turbulent and the environmental conditions stay the same. This makes for poor use in an aeroponic system because as soon as the water disperses from the sprayer the oxygen concentration is lowered drastically. This infuser works much more efficiently with static DWC systems. Research has also shown that rooting time can be lowered to 2 days with supersaturated O2 levels in the water when cloning.

I've been experimenting with this O2 infusion for a couple months now after months of tedious research. Something else that this seems to work very well for is aerobic compost tea brewing. Some friends of mine own a compost tea brewing business and they asked if I could play around with the O2 levels of their already mixed brew. After throwing the infuser in for a 24 hr period, a tea sample was looked at by their microbiology lab and found to have a much higher count of beneficial bacteria and fungus than previous brews.

The salt in the reservoir does play a role in the amount of oxygen the water can hold– this is evident in my reservoir because my predicted DO level at my temperature and barometric pressure in pure water is supposed to be ~ 36 mg/L. But obviously the nutrients won't allow for anything near that level at my current temps and pressure.

Now if I were at sea level, or 1 atm, I could reach ~32 mg/L DO with this device. To drastically affect the DO levels you would need an incredible amount salt, over 3000 ppms.

I'll post pics of the DO reading tomorrow, I have to refill my O2 tank anyways.

Just be careful with the stuff boys, it will fry your girls in too high of a dose.

It has it's uses though ....