passive plant killer

[delta9nxs]

TONS of help, thank you sir!

I'd like to stay with 1 1k if possible, your earlier comment about the 8x8 really hit home for that goal, would i be correct in assuming you meant vertically bare bulb or in a cooltube? unfortunately for this round there's no time to prep plants for the ppk, but ive got lil ones that can and will. gonna do 16 in 5 or so gal buckets of coco - simple shit.

i see what you mean about the pulse and pump, was wondering if that was pulled separately, but that control bucket acts like a water level, and i think that dropped coco is a reverse almost equivalent of the blumats.

but, you mean you don't add anything to prevent algae, root rot, and the like? What RH do you keep things at?

well, with an 8x8 and only four plants, maybe six, you could get away with a bare bulb, depending on ventilation, of course.

the tail piece will supply and grow a nice plant alone, with only a little water on top once in a while. it just won't be as large.

what algae? what root rot? don't get them with this device and won't get them if built and operated correctly.

editing to say i run rh at 50-60%, usually.

 

[delta9nxs]

oh yeah - exactly what would one shop for to find such a wick?

just saw your wick question. i use a polyester upholstery batting in my wick cloners sold in fabric stores. it's called "thermolam plus". it's used in quilts and blankets as an insulator.

acrylic yarn works well, too.

nylon rope but i feel it's too tight.

some folks are using microfiber wicks. i don't know what kind.

later

 

[SoorcNor]

D9

I do about the same thing as you except I use the same volume of both Jack's/Calcinit.

I want to mix approx.16 gal in a 18 gal tote so I add approx 14 gallon RO water then add and mix a shot glass worth of Jack's and wait 10-30 minutes then add and mix the same shot glass worth of Calcinit then I measure the PPM at .5 conversion and it is always around 850 to 900. Then I add RO water to dilute to 750.

I have been using this formula for the last 5 weeks. I have 4 in flower and 11 in veg and everything is stable. I am only checking 3 random PPK's every 4 days and would reduce that but then I would have nothing to do but pluck and harvest.

I am harvesting my last rail Friday that has BionaCare Nutes and from then on it is nothing but Jacks/Calcinit for me.

Thanks for starting this thread it has made my garden so much simpler to manage.

Soorc

 

[DevilWeed]

Thanks delta. The buds in the pics were from the same strain, GreenHouse Cheese.

As for the nutes, I made up that calc so I could mix quicker. Being new to Jacks, I was adding what I thought would get me close, then creaping it up waiting 5 or 10 mins between measuring. So I started tracking by weight. Now I can hit the numbers plus or minus ~25ppm first time around. What surprised me was the amount needed to get it where I want. It's more a case of me wondering if I'm doing something wrong. My ratios come out @ 1/.67 so I guess I should just ignore it.

 

[huntingbb]

well, with an 8x8 and only four plants, maybe six, you could get away with a bare bulb, depending on ventilation, of course.

the tail piece will supply and grow a nice plant alone, with only a little water on top once in a while. it just won't be as large.

what algae? what root rot? don't get them with this device and won't get them if built and operated correctly.

editing to say i run rh at 50-60%, usually.

Thanks that should get me goin, more questions to come i'm sure

would be nice to grow fewer but better yielding girls; what about mixing strains?

*damn my insomnia* i need better meds!

 

[jjfoo]

delta,
oh, I misunderstood water stress to be too much or too little. Yea they where looking as if they where overwatered. People say you can't over water in coco. I know what they mean, but it just isn't than simple.

 

[jjfoo]

Thanks delta. Being new to Jacks, I was adding what I thought would get me close, then creaping it up waiting 5 or 10 mins between measuring. So I started tracking by weight. Now I can hit the numbers plus or minus ~25ppm first time around. What surprised me was the amount needed to get it where I want. It's more a case of me wondering if I'm doing something wrong. My ratios come out @ 1/.67 so I guess I should just ignore it.

yea, I went through that

I had my triple beam out when I was adding nutes. It is like I just wanted to confirm everything. Now I use have it down and use the EC meter to double check.

I remember the days of mixing 6 things...

 

[oldone]

Hi D9,

<insert mandatory grandiose well-deserved comment about your grow here>

I would beg a favour however. Would you comment in detail on how your pulse system works? I'm especially interested if your whole top surface gets wet or just spots. Does your coco surface dry out between pulses?

I've been pondering my slight salts accumulation problem and how to fix the pulse system next run. I pulse about 25 ounces once a day. The fluid is delivered in 3 locations. I would say a 2" dia area underneath each get saturated but elsewhere nothing much happens. I'm speculating that these untouched areas are where my buildup occurs.

Thanks,
OO

 

[delta9nxs]

Hi D9,

<insert mandatory grandiose well-deserved comment about your grow here>

I would beg a favour however. Would you comment in detail on how your pulse system works? I'm especially interested if your whole top surface gets wet or just spots. Does your coco surface dry out between pulses?

I've been pondering my slight salts accumulation problem and how to fix the pulse system next run. I pulse about 25 ounces once a day. The fluid is delivered in 3 locations. I would say a 2" dia area underneath each get saturated but elsewhere nothing much happens. I'm speculating that these untouched areas are where my buildup occurs.

Thanks,
OO

i feel you are not pulsing with enough frequency for coco. the cure is smaller but more frequent events.

you've got the timer that can deliver 20 pulses a day. why not time it to deliver 20 pulses 72 minutes apart.

i would start with about four oz's each time and see how it looks. you are in a 2 gal container, right?

if your timer delivers too much water in the minimum duration window you can easily reduce flow to get the volume you need. there are several methods. have you measured the volume yet or does the timer just deliver 25 oz's in one minute or something similar?

one thing to consider with the way you are operating is that you don't change from one reservoir to another halfway through a plants life like i do.

also, i wouldn't be too worried about .4 ec or so. remember the principle of mass balance. the plants take up different nutrients at different rates during their lives.

if you input a 3-1-4 ratio and the plants tissue analysis shows approx 3-1-4 after harvest does it matter what the profile is in between if you feed the 3-1-4 consistently at the right dose?

i don't think so. mass balance states that, in a closed system, the nutrients are present somewhere in the system. the solution, the medium, or the plant.

this will cause slow but self correcting changes in ec and ph as the nutrients are consumed at different rates during a grow.

probably the easiest way to slow down delivery rate is to make a vertical loop in the line from the pump. the higher the loop the more head penalty and the less volume.

have you heard anything from IF? he hasn't posted on his thread since the 28th.

forgot to mention that my coco stays moist to the touch on top except for a thin crust away from the pulse outputs. i can pick it up anywhere and squeeze it and get some water to run out.

 

[jjfoo]

instead of making the water rise why not put a T connector on your pump. One side goes to water the other has a adjust valve. You can have some or all of the water go to watering depending on the valve. Your motor will do less work and you can also agitate your water in your control bucket. I have my T hooked up to a 90 elbow so it creates a flume that breaks up the surface tension to allow for better gas exchange. The bigger the flume the less water goes to the plants.

 

[jjfoo]

I'm speculating that these untouched areas are where my buildup occurs.

how are you determining there is a salt build up? Also, what is your EC in your control bucket?

 

[oldone]

Hi guys,

I must have a misconception with the mechanics of pulsing. I envisioned a quantity of fluid being delivered fast enough that the whole top surface of the coco became flooded. This flood would then percolate down rinsing all the coco and pulling in fresh oxygen behind it.

My 25 oz is delivered over 1 minute and no such flooding occurs. Just those 3 areas under my pulse points get the flush and elsewhere is untouched.

If your pulse does not work this way D9 are you up to a little experiment? Do the same thing I did...get 1-2 quarts from the ppk rez, note the starting EC, then dump it all in the ppk. Wait 10 minutes then measure EC again. I'd be interested in your findings.

Are you saying that more frequent smaller pulses will lead to a more uniform salts profile in the coco? If so, I dont get how this can work but am yet again willing to learn from the master!

I'm not worried about a .4 EC rise but was in fact delighted that it was so low. (I remember getting 3.6 with 4 liters of RO!) The reason I asked is that I'm so bored and its the only thing I have to talk about. My ppk is just chugging along and Medusa is looking much better at this point that her mom.

I have not heard a peep from IF either, I hope all is well for him. Have not heard from *mistress* either...wishing her the best as well.

Thanks for the help D9,
OO

 

[oldone]

I have my T hooked up to a 90 elbow so it creates a flume that breaks up the surface tension to allow for better gas exchange. The bigger the flume the less water goes to the plants.

Got a pic? here's mine:


I ran a simple experiment last week. I took about 2 liters of 1.5 EC fluid from my ppk rez and dumped it through the ppk. 10 minutes later the ppk rez was at 1.9 EC.

I dont have a control bucket...my float valve is in the ppk rez. Bulk rez is always around 1.5.

nice talking with you,
OO

 

[*mistress*]

......................

 

[jjfoo]

Hi guys,

I must have a misconception with the mechanics of pulsing. I envisioned a quantity of fluid being delivered fast enough that the whole top surface of the coco became flooded. This flood would then percolate down rinsing all the coco and pulling in fresh oxygen behind it.

dude, I had the exact same vision, too... I could have sworn I read this description somewhere, but couldn't find the exact post. Maybe we both misunderstood in the same way, which is actually quite common.

 

[oldone]

dude, I had the exact same vision, too... I could have sworn I read this description somewhere, but couldn't find the exact post. Maybe we both misunderstood in the same way, which is actually quite common.

kinda scary...both programmers, both with the same vision...

 

[delta9nxs]

Quotes by OO

“I must have a misconception with the mechanics of pulsing. I envisioned a quantity of fluid being delivered fast enough that the whole top surface of the coco became flooded. This flood would then percolate down rinsing all the coco and pulling in fresh oxygen behind it.”

While you could pulse that much it is not necessary. You just need enough to keep the top of the medium moist and still have sufficient volume to to travel downward through the medium. This works only if your medium is already moist.

The discussion on hysteresis explains the phenomena but essentially liquid added to a medium that is already in liquid equilibrium will cause a displacement wave to travel downward and outward until liquid equilibrium is reached again.

This cannot occur in a medium that has been allowed to dry past a certain point. When the pulse hits the top of a drier medium cohesion causes it to reform into a column below the splash zone. Water has a greater attraction to itself than to other substances. Water will tend to channel in a drier medium as a drier medium is more hydrophobic.

Hitting the top of a moist medium causes immediate dispersion.

Drying the medium concentrates salts.

“My 25 oz is delivered over 1 minute and no such flooding occurs. Just those 3 areas under my pulse points get the flush and elsewhere is untouched.”

See above.

“If your pulse does not work this way D9 are you up to a little experiment? Do the same thing I did...get 1-2 quarts from the ppk rez, note the starting EC, then dump it all in the ppk. Wait 10 minutes then measure EC again. I'd be interested in your findings.”

Do you mean from the same reservoir the plant is using? If so, that would be difficult as I would have to lift a plant out to get that much liquid. I'll see.

“Are you saying that more frequent smaller pulses will lead to a more uniform salts profile in the coco? If so, I dont get how this can work but am yet again willing to learn from the master!”

yes, not just the coco but the entire system.

“I'm not worried about a .4 EC rise but was in fact delighted that it was so low. (I remember getting 3.6 with 4 liters of RO!) The reason I asked is that I'm so bored and its the only thing I have to talk about. My ppk is just chugging along and Medusa is looking much better at this point that her mom.”

I think we are going to have to start a thread for ppk growers having trouble finding stuff to do. I got to mix nutes tonight! Trimmed a little bud. Looked at stuff. Now i'm done.

“I have not heard a peep from IF either, I hope all is well for him. Have not heard from *mistress* either...wishing her the best as well.”

I knew mistress was posting around but this is very uncharacteristic of IF!

“Thanks for the help D9,
OO”

u b welcome.

 

[delta9nxs]

been trimming a plant in stages, taking the larger terminal buds first. here are a few shots.

they are of different buds except for 3 and 4 which are different sides of the same one.

this plant defoliated at onset of 12/12 and at end of stretch. very heavy, dense buds. ec 1.5 for life. no ph adjusters. no bloom boosters.

the last plant went 16.9. i'm hitting 16 regularly now.

finally used up a 25 lb bag of jack's.

 

[jjfoo]

kinda scary...both programmers, both with the same vision...

people always say great minds think alike, I usually say sick minds thing alike!

(no offense)

 

[jjfoo]

what are some methods that you use for computer and network security?
how would you secure a computer? how would you secure a network?

how do you measure computer security and network security?

how do you secure connection to icmag?

what do embedded devices do?

thanks. cheers.

firewall to create dmz (amongst many other things that could fill books)

Measuring: uptime stats, very hard to do depending on the exploits used (you may not even know you are hacked)

a proxy server can be a less traceable way to connect

embedded devices are devices that usually are specialized to do things, like say control your oven or VCR, they can use microprocessors that are very cheap instead of say using a pentium chip from a PC