User Tag List

Informational! Informational!:  0
Likes Likes:  0
Page 4 of 9 FirstFirst 12345678 ... LastLast
Results 25 to 32 of 66

Thread: Circulating Bogs: How-to

  1. #25

    Join Date
    Dec 2003
    Location
    Martinez, California
    Posts
    3,556
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    A home depot 60 GPH pump. Do not know the manufacturer. I am also going to try Lowe's. They have them down to 30GPH. Also, adjustable speed aquarium pumps will work. I have used them too. I am going to try a rheostat inline to control water speed to see what happens in this pot.
    45 yrs. growin\'
    Founder NASC

  2. #26
    VFT and Drosera lover vft guy in SJ's Avatar
    Join Date
    Jun 2003
    Location
    Merced, California
    Posts
    1,503
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Hey Steve, if you need an official photographer just let me know I promise I wont get you into more than a dozen shots or so.. hehehe
    There are only 2 infinite things... the universe and human stupidity, and I'm not too sure about the universe.

  3. #27
    Av8tor1's Avatar
    Join Date
    Jan 2007
    Posts
    4,811
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    Bugweed,

    A rheostat will probably result in early motor death, most AC motors are not forgiving of voltage drops in excess of 10%, as RPM drops so does inductive reactance and counter EMF which can result in higher motor current and heat.
    In industry you would normally use an adjustable frequency drive for AC motor speed control and pulse width modulation for DC motor speed control

    there may be DIY frequency drive plans out there somewhere, Ill look around.... DIY PWM is relatively easy and economical, but DIY frequency drives might be another matter

    bypassing some of the pump output back to reservoir would be one option I would think, just don't ever restrict a pumps inlet, this can lead to cavitation and pump damage

    also consider that the flow through the pump is what cools and lubricates the pump....

    just recalled once seeing a diode used to give an ac motor a lower speed, this would block half the sine wave.... hmmmm still would reduce CEMF and Z, but would also reduce overall current and heat..... LOL need an EE

    Cheers'
    Av

    well, its not too bad... basic PWM circuit with low pass filter and a few other goodies to reshape the wave and step the voltage back up
    Last edited by Av8tor1; 03-16-2007 at 10:41 AM. Reason: add comment/url

  4. #28
    Alien1099's Avatar
    Join Date
    Jan 2008
    Location
    Phoenix, AZ USA
    Posts
    207
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Anybody still have the pics from the original post to rehost them?

  5. #29
    billylh's Avatar
    Join Date
    Mar 2008
    Location
    Austin, TX
    Posts
    475
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    so this would just circulate the whole time and you wouldnt have to water the bog?

    i thought about a similar setup consisting of a bin with a hole drilled out about 5-6 from the bottom with a bulkhead fitting installed and having it flow to a separate reservoir(~40 gallons) and having the water pumped back(maybe on timer depending) thru a soaker type hose placed just underneath the surface of the mix...would that be enough to not have to manually water them? the automation of the growing would be nice.

    ~b

  6. #30
    Moderator Schmoderator Fluorescent fluorite, England PlantAKiss's Avatar
    Join Date
    Aug 2001
    Location
    Richmond, Virginia/Zone 7
    Posts
    10,335
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Its my understanding that the circulating water keeps the water from becoming stagnant and also feeds a high amount of oxygen to the roots. However, not being mechanically inclined, I have not built one of these.
    "Fox terriers are born with about four times as much original sin in them as other dogs." - Jerome K. Jerome

  7. #31
    billylh's Avatar
    Join Date
    Mar 2008
    Location
    Austin, TX
    Posts
    475
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    So what type of media mix does everyone recommend for a circulating bog? Someone posted that perlite should be kept to a minimum so I must ask do I just mix like a 20/80 perlite/peat? I plan on mixing everything tomorrow. Also, my setup is going to pump in water at ~5" from the top of the bog and drain at the same level on the opposite side, both with ebb & flow type bulkheak fittings, any foreseeable problems with this? screens and sediment prefilters will be installed as well to prevent peat run-off.

    im going to drive around and find a whiskey barrel half to install the pond liner into, it should work great, if im correct...

    thanks,
    ~b

  8. #32
    scottychaos's Avatar
    Join Date
    Aug 2001
    Location
    Western New York, USA
    Posts
    2,970
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by billylh View Post
    So what type of media mix does everyone recommend for a circulating bog? Someone posted that perlite should be kept to a minimum so I must ask do I just mix like a 20/80 perlite/peat?
    If perlite should be kept to a minimum, then how about zero percent perlite?
    thats the percentage I would use..
    I dont understand why anyone uses perlite for anything..totally unnecessary IMO.

    Scot

Page 4 of 9 FirstFirst 12345678 ... LastLast

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •