Pathogen Control

I don't think the UV steriliser will work. First, an LED based UV steriliser would probably not have enough output to sterilise more than a coffee cup of solution. There's UV sterilisers which are based on a fluoro tube which are much more effective. Second, only the solution that is pumped past the UV steriliser (even a good one) would be sterilised. There would be no antipathogen effect at any place other than in the immediate vicinity of the UV steriliser.

50% grade H2O2 applied to the nute soln @ 1ml/L every 3-4 days is the answer. It will sterilise any water contact surface in the system as well as introduce O2 to the roots, something no UV steriliser of any kind can do.
 
I don't think the UV steriliser will work. First, an LED based UV steriliser would probably not have enough output to sterilise more than a coffee cup of solution. There's UV sterilisers which are based on a fluoro tube which are much more effective. Second, only the solution that is pumped past the UV steriliser (even a good one) would be sterilised. There would be no antipathogen effect at any place other than in the immediate vicinity of the UV steriliser.

50% grade H2O2 applied to the nute soln @ 1ml/L every 3-4 days is the answer. It will sterilise any water contact surface in the system as well as introduce O2 to the roots, something no UV steriliser of any kind can do.

Dammit! I knew somehow...oh well. Thanks Al! I get nutes today and H2O2 tomorrow. Maybe I'll use this little thing on my 15 gal res I use for my flood table and see what happens. At lease it will recirc some H2O....
 
Dammit! I knew somehow...oh well. Thanks Al! I get nutes today and H2O2 tomorrow. Maybe I'll use this little thing on my 15 gal res I use for my flood table and see what happens. At lease it will recirc some H2O....

Well, the problem is that pathogens are everywhere... if they'd only be cooperative and stay in the nute solution so they could all be pumped past the UV steriliser, all would be fine. Unfortunately, they tend to stick on things that don't get shifted past the steriliser.

Sorry you spent money on the thing. :?
 
Well, the problem is that pathogens are everywhere... if they'd only be cooperative and stay in the nute solution so they could all be pumped past the UV steriliser, all would be fine. Unfortunately, they tend to stick on things that don't get shifted past the steriliser.

Sorry you spent money on the thing. :?

Eh...I can most likely get my $50.00 out of it on ebay. It is, after all, New In Box!!!

Thanks Al...I'll stick to the H2O2.

:peace:
 
hey, that'll make ya popular on ebay... :lol:

I didn't buy it off ebay, I got if from an pond/aquarium supply shop. Should be OK. I'll call em tomorrow and let em know I changed my mind.

Hey Al, I just wanted to thank you again for everything you have done...all the advice. In the short time I have been in communication with you, you have literally save my entire grow op!

I found a chemical supply whse that as bulk H2O2 at $20.00 and I'm going to pick some up tomorrow. Evidently that HyOx stuff is no longer available.

Thanks again. I owe you a beer sometime!
 
I didn't buy it off ebay, I got if from an pond/aquarium supply shop. Should be OK. I'll call em tomorrow and let em know I changed my mind.

ok, cool

Hey Al, I just wanted to thank you again for everything you have done...all the advice. In the short time I have been in communication with you, you have literally save my entire grow op!

You're welcome. :)

I found a chemical supply whse that as bulk H2O2 at $20.00 and I'm going to pick some up tomorrow.

How much for $20? What %?


Evidently that HyOx stuff is no longer available.

H2O2 is repackaged and sold under a number of brand names by retailers.

Curiously, the brand name 'OxyPlus' is used by a plethora of unconnected suppliers. It's not like there's any one company manufacturing H2O2 and labelling it as 'OxyPlus' and then wholesaling it out to distributors and retailers. The brand name apparently is not trademarked and I can't recall ever hearing of a squabble over the use of it. It's like every car company on earth making an identical car with the same name (which I personally think should be 'DevilDrongo 3000 MkIII turbo').

Thanks again. I owe you a beer sometime!

You're welcome again, but I'd rather have a nice coffee. Beer's wasted on me, I don't actually do alcohol. :)
 
How much for $20? What %?
$20.00 a gallon (about 4 liters, correct? 3.8?) for 35% non stabilized "technical" grade H2O2. No shipping cuz I'm gonna pick it up! I still can't find 50% H2O2 for less than about $120USD for 500ml. Pricey stuff here!!! Wanna start an import export business???

You're welcome again, but I'd rather have a nice coffee. Beer's wasted on me, I don't actually do alcohol. :)
I actually can't remember the last time I had a beer....has to have been a couple months now. I prefer a good bong hit myself!!!
 
$20.00 a gallon (about 4 liters, correct? 3.8?) for 35% non stabilized "technical" grade H2O2. No shipping cuz I'm gonna pick it up!

$20 US gal (3.78L) is pretty good! I pay $AU5.00/L for 50%, which is a tick less than you're paying but you're not doing not too bad. :)

I still can't find 50% H2O2 for less than about $120USD for 500ml. Pricey stuff here!!! Wanna start an import export business???

Well, if it made any difference whether you used 50% or an appropriately stronger dose of 35%, I'd consider it, but 35% is perfectly fine to use. I'm pretty confident I could not beat the per ml of pure H2O2 price you are paying.

However, high strength H2O2 is quite hazardous and a lot of postal services won't touch it. Plus, it weighs 1kg/litre. Shipping the stuff would be prohibitively costly from here.
 
$20 US gal (3.78L) is pretty good! I pay $AU5.00/L for 50%, which is a tick less than you're paying but you're not doing not too bad. :)



Well, if it made any difference whether you used 50% or an appropriately stronger dose of 35%, I'd consider it, but 35% is perfectly fine to use. I'm pretty confident I could not beat the per ml of pure H2O2 price you are paying.

However, high strength H2O2 is quite hazardous and a lot of postal services won't touch it. Plus, it weighs 1kg/litre. Shipping the stuff would be prohibitively costly from here.
The place I got it from was SIMPLE. No questions asked. They have a TON of cool stuff there too. Lab supplies, hazardous material stuff. I realized quickly that this stuff is NO joke. I got some chemical gloves and splash glasses/goggles for handling the H2O2.

I COMPLETELY tore town my system today. I cleaned EVERY crack and crevice I could get to. Then I NUKED the system with like 8.5ml/L and let it soak for about 20-30 minutes. I cleaned the pumps and ran the same solution through them as well. Nothing stinks anymore. It was a TON of work...but I think I have a handle on this now.

I have expanded and I now have a flood table for little girls that need pH water or low % nutes, and a seperate table/res tank for juvenile young adult plants! This is SOOOO cool!.

I can't thank you enough for your help. You seriously save my op!

:weed:
 
I realized quickly that this stuff is NO joke. I got some chemical gloves and splash glasses/goggles for handling the H2O2.

yes indeed, you very seriously don't want any skin or eye/lung contact with 50% H2O2.

I COMPLETELY tore town my system today. I cleaned EVERY crack and crevice I could get to. Then I NUKED the system with like 8.5ml/L and let it soak for about 20-30 minutes. I cleaned the pumps and ran the same solution through them as well. Nothing stinks anymore. It was a TON of work...but I think I have a handle on this now.

I think you do, too. :)

I have expanded and I now have a flood table for little girls that need pH water or low % nutes, and a seperate table/res tank for juvenile young adult plants! This is SOOOO cool!.

farm out, mang. :)

I can't thank you enough for your help. You seriously save my op!

You're welcome. :)
 
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