keeping reservoir bacteria free

[rkymtnman]

NASA I think use a 30 micron filter

some where around that size anyway

that got me thinking. just did a quick search of what micron size Pythium is and came up with this : kinda interesting.

Zoosporic pathogens in the genera Pythium and Phytophthora cause extensive root disease epiphytotics in recirculating hydroponic vegetable-production greenhouses. Zoospore cysts of Pythium myriotylum Drechsler were used to evaluate the effectiveness of cross-flow membrane filters to control pythiaceous pathogens in recirculating hydroponic systems. Four membrane filter brands (Honeycomb, Polypure, Polymate, and Absolife) were tested alone or in combination to determine which filters would effectively remove infective propagules of P. myriotylum from solutions and reduce disease incidence and severity. Zoospore cysts of P. myriotylum generally measured 8 to 10 microm, and it was hypothesized that filters with pore-sizes<5 microm would be effective at removing 100% of the infective propagules and protect pepper plants from root infection

 

[THE KONASSURE]

that got me thinking. just did a quick search of what micron size Pythium is and came up with this : kinda interesting.

Zoosporic pathogens in the genera Pythium and Phytophthora cause extensive root disease epiphytotics in recirculating hydroponic vegetable-production greenhouses. Zoospore cysts of Pythium myriotylum Drechsler were used to evaluate the effectiveness of cross-flow membrane filters to control pythiaceous pathogens in recirculating hydroponic systems. Four membrane filter brands (Honeycomb, Polypure, Polymate, and Absolife) were tested alone or in combination to determine which filters would effectively remove infective propagules of P. myriotylum from solutions and reduce disease incidence and severity. Zoospore cysts of P. myriotylum generally measured 8 to 10 microm, and it was hypothesized that filters with pore-sizes<5 microm would be effective at removing 100% of the infective propagules and protect pepper plants from root infection

Nice

you know some bin bags have very small holes to let water out like 20 maybe even 5 microns

I have thought about using them to line the inside of a dwc that way I could just pull the bag out and do a res change with a new bag saves cleaning the whole system

I saw some Jap guy use gel then some plastic with very small holes then a watering system and some plastic sheets under that, he grew tomatoes in the dessert fine and NASA have used his system to grow in space I heard

its soilless

but the main smart thing for me was that plastic filter layer that went between the root zone and the water supply

 

[jronnn]

i do that. used to use dutchmaster zone.

now i use HTH pool shock. 0.15 grams per 10 gallons water gives 2 ppm chlorine. i use a bit stronger since my res temps get fairly warm (high 70'sF)

the plant will actually use chlorine too so even better.

hey i was wondering how often you add the poolshock and howlong is it effective? i plan on doing what the OP does (having a water storage res) but i also use hydroguard and all my res changes or top offs happen every monday, so i was wondering how you would time out when to add the poolshock so its sterilizing the storage res until sunday night so when i change the res on monday i can still use hydroguard without the hth killing it off?

 

[rkymtnman]

hey i was wondering how often you add the poolshock and howlong is it effective? i plan on doing what the OP does (having a water storage res) but i also use hydroguard and all my res changes or top offs happen every monday, so i was wondering how you would time out when to add the poolshock so its sterilizing the storage res until sunday night so when i change the res on monday i can still use hydroguard without the hth killing it off?

well, you can't do both. gotta choose hth or hydroguard.

i do weekly or 10 day changes of my res. i use hth at each change. i do drain to waste so the hth chlorine level will stay the same for hte whole week or 10 day cycle.

 

[tyler.durden]

I use the pool shock solution in my aero cloner, and even with water temps of up to 85 everything roots nice, white and healthy. The warm water makes for quick rooting, too. I used to use hydroguard, but you never know if you have an expired batch until your clones are dying. Can't afford that anymore. The chlorine always works as it doesn't go bad. I use DM Zone in my f&d reservoirs, it works very well for keeping them completely clean and sterile. I used to use bennies for everything, but it's a lot to muck around with and the balance from good to bad can easily shift. Sterile for me all the way now for 100% consistent results...

 

[THE KONASSURE]

why not go sterile and add bennies to a tank of pool shocked water

you just have to find a few strains of bennies that can deal with the chlorine like super bug bennies, then breed them up and add them yourself ?

 

[Yesdog]

why not go sterile and add bennies to a tank of pool shocked water

you just have to find a few strains of bennies that can deal with the chlorine like super bug bennies, then breed them up and add them yourself ?

that's a thing? Wonder which bennies can put up with it. I've got 1ppm chlorine coming from the tap, it'd even be nice to just use plain tap water without bubbling it overnight, for fear of killing off the healthy ecosystem

 

[THE KONASSURE]

that's a thing? Wonder which bennies can put up with it. I've got 1ppm chlorine coming from the tap, it'd even be nice to just use plain tap water without bubbling it overnight, for fear of killing off the healthy ecosystem

you probably need a microscope and a collection of bactria`s

the warmer temps some people are running could really help the bennies if you can find some that can take the chlorine there must be some out there that can take it

 

[tyler.durden]

People either run sterile and bennies, it's an either/or situation. Afaik, there is no organic matter that can withstand sufficient amounts of chlorine, if there were our population would be in serious trouble. One of those super bugs would eventually find it's way into our water treatment plants and we'd all be fucked...

 

[Yesdog]

People either run sterile and bennies, it's an either/or situation. Afaik, there is no organic matter that can withstand sufficient amounts of chlorine, if there were our population would be in serious trouble. One of those super bugs would eventually find it's way into our water treatment plants and we'd all be fucked...

I guess there's at least one. holy shit!

http://www.academia.edu/17220797/Chlorine_and_antibiotic-resistant_bacilli_isolated_from_an_effluent_treatment_plant

 

[tyler.durden]

I guess there's at least one. holy shit!

http://www.academia.edu/17220797/Chlorine_and_antibiotic-resistant_bacilli_isolated_from_an_effluent_treatment_plant

Wish I could read it, but I have to be a member or something. Maybe you could cut and paste the text from that PDF here?

 

[Yesdog]

it seems like mostly indecipherable babbling to me, but here's the conclusion (not sure why i can access this lol):

ABSTRACT. Resistance to different concentrations of chlorine and the susceptibility to antibiotics by bacteria isolated from the final effluent of the Pici Campus wastewater treatment plant of the Federal University of Ceará (UFC) is evaluated. Twelve strains, morphologically and biochemically identified as belonging to the genus Bacillus, were selected. The strains were submitted to sodium hypochlorite at different contact times and tested against the antibiotics amoxicillin, erythromycin, chloramphenicol, tetracycline, and vancomycin. All strains were resistant to concentration 0.1 ppm chlorine up to 30 minutes, but bacteria resistant to concentrations up to 5,000 ppm for 10 minutes were detected. Bacterial growth was impaired in 10,000 ppm concentration. The strains presented three antibiotic resistance profiles, 50% were sensitive to all antibiotics, 25% were resistant to one antibiotic and 25% were resistant to two antibiotics.

Strains 1, 2, 3, 4, 7, 10 and 11 resisted up to 5,000 ppm for 10 minutes; the isolate 9 resisted 1,000 ppm for 30 minutes and failed to grow in 5,000 ppm. Strains 5, 6, 8 and 12 exhibited different behavior patterns with regard to chlorine tolerance. In decreasing order, strains 8, 5, 6 and 12 may be underscored among the more susceptible strains. Strain 8 presented resistance until 50 ppm concentration for 30 minutes, with no evidence of any growth as from 100 ppm chlorine. The isolate 5 was resistant up to 5.0 ppm for 30 minutes but did not survive in higher concentrations of chlorine (Table 4).

The isolated bacteria, classified as belonging to the genus Bacillus, presented extreme in vitro resistance to chlorine, with 50% of the strains resistant to 1 or 2 antibiotics. Although no definitive conclusion may be reached with regard to the co-resistance prevalence for chlorine and to the co-resistance prevalence for chlorine and antibiotics, the need for environmental precautions is evident. The environment where water is discharged should preserve its ecological balance for human health. There are high possibilities that these strains may have biotechnological applications for the production of extremely resistant enzymes.

5,000 ppm Cl... holy shit lol

 

[Michael Huntherz]

I use six drops of bleach per gallon every four or five days or so, and limit light allowed anywhere into the system at as close to zero as possible. It seems to work.

 

[tyler.durden]

it seems like mostly indecipherable babbling to me, but here's the conclusion (not sure why i can access this lol):
5,000 ppm Cl... holy shit lol

Thanks for posting that. So, long story short: All of those strains of bacteria were killed by only 1ppm of chlorine after 30 minutes. I guess that's why they say to wait at least 30 minutes before drinking if you're disinfecting water with chlorine yourself. That's fine with me, my initial dose of pool shock gives my water more than that. Also, I'm sure the amount of chlorine at the treatment plant is way high. Some tap water comes out at 4ppm. Nothing to worry about...

 

[rkymtnman]

I use six drops of bleach per gallon every four or five days or so, and limit light allowed anywhere into the system at as close to zero as possible. It seems to work.

great to see another chlorine guy here.

the only bad thing i heard about bottled bleach is that it will break down over time once the bottle is opened.

i had that happen to a bottle of dutchmaster zone that i had for years. after a few years, i had to use more than the max dose to keep the nasties away. finally figured it out and went the hth pool shock way. a 1 lb bag might last me until 2025?? lol.

 

[Michael Huntherz]

great to see another chlorine guy here.

the only bad thing i heard about bottled bleach is that it will break down over time once the bottle is opened.

i had that happen to a bottle of dutchmaster zone that i had for years. after a few years, i had to use more than the max dose to keep the nasties away. finally figured it out and went the hth pool shock way. a 1 lb bag might last me until 2025?? lol.

I use gravity-fed Blumats, not a timer system, my reservoirs are small so I am sure it mostly evaporates before it gets to the plants anyway, but I am sure liquid bleach does break down, and it can be bad for the laundry. Pool Shock is a great idea. I like my dry nutes, pool shock fits my program. I go through enough household bleach it will never go bad, but still, dry makes sense, thanks!

 

[rkymtnman]

I use gravity-fed Blumats, not a timer system, my reservoirs are small so I am sure it mostly evaporates before it gets to the plants anyway, but I am sure liquid bleach does break down, and it can be bad for laundry. Pool Shock is a great idea. I like my dry nutes, pool shock fits my program.

i love it. 0.15 grams per 10 gallons for 2ppm free chlorine. i use double cause i do hempy buckets and my nutes get warmer than they should. high 70s minimum

 

[Michael Huntherz]

i love it. 0.15 grams per 10 gallons for 2ppm free chlorine. i use double cause i do hempy buckets and my nutes get warmer than they should. high 70s minimum

I ran one plant in a hempy a while back, wondered how people dealt with that, but I still did OK. I guess I know one way now, thanks.