Which would produce more DO in a DWC?

Discussion in 'Hydroponics / Aeroponics' started by JSB99, Jul 5, 2017.

  1.  
    Cold$moke

    Cold$moke Well-Known Member

    Or way over powerd!
    I ran a 100 amp sub to my 8x12 lol

    But to be fair half is for my futur work shop lol
     
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  2.  
    JSB99

    JSB99 Well-Known Member

    Damn, dude!!!
     
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  3.  
    JSB99

    JSB99 Well-Known Member

    No doubt. I get visions of a dozen Christmas light strands plugged into a single outlet! There are some pretty smart people here, but you know there are some, way on the other side of the spectrum, that are a spark away from burning their house down :lol:
     
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  4.  
    Budley Doright

    Budley Doright Well-Known Member

    I’ve got one, just haven’t done the wiring yet, it’s 60’ if crawl space to the end of house where shed is :(. Soon, very soon lol.
     
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  5.  
    mytwhyt

    mytwhyt Well-Known Member

    C$,
    This ones for you.. I figure this threads has gone so far OT, another jog to the left won't matter..
    You'll find ton of good casting info on this site.. Here's Rasper's thread on diy high temp pyrometers...
    http://www.alloyavenue.com/vb/showthread.php?9329-Getting-accurate-reads-from-a-pyrometer
    This is the best diy metal casting forum on the net.. You'l find all skill levels, some are mastercraftsmen, in their metals of their choice..
    Now about that DO, where did we wind up there? I think what was decided was, if a fish can thrive in it, so can a pot plant... Well that's good enough for me..
     
    Last edited: Mar 13, 2018
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  6.  
    Budley Doright

    Budley Doright Well-Known Member

    Even air breathing ones lol. Pretty sure that’s not the conclusion but may have missed that lol.
     
  7.  
    kingtitan

    kingtitan Well-Known Member

    I cannot recall the thread or even if it was this forum but a guy did a complete test with a DO meter with every method (airstone,venturi, waterfall etc.) and it came out that the simple waterfall made the most DO.
     
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  8.  
    JSB99

    JSB99 Well-Known Member

    @Cold$moke posted a copy of it in one of his threads. It concluded that there is a maximum amount of DO a plant can take in.

    A simple waterfall isn't all that simple though. You have to make sure you have a powerful enough pump to get DO to the center of all the roots in your totes. Powerful pumps create heat problems with the water, so you have to get a handle on water temps, because you want the water between 66 and 68 degrees.

    Using an air pump and stones allows you to get the same amount if DO to the roots, equally in every container. With a powerful enough pump, that is. These create heat as well. Downside is that you now have two pumps running.
     
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  9.  
    JSB99

    JSB99 Well-Known Member

    Forgot to mention that the plants take in less DO as temps rise.
     
  10.  
    Budley Doright

    Budley Doright Well-Known Member

    Yes, I saw that. I got away from stones as I felt it was screwing up my ph
     
  11.  
    Cold$moke

    Cold$moke Well-Known Member

    Not quite the water can only hold so much DO
    At any given temp. Close though :)

    But the difference between 67 degrees and 75 degrees isnt enough for me to worry about :)
     
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  12.  
    Budley Doright

    Budley Doright Well-Known Member

    Well it’s more there is less to take in I think (lower temps hold more DO) as well as easier for bad shit to take hold. I have had zero issues with using only a water pump but the key to that is a chiller. My thinking is, to get the most out of a flooded system the water should be chilled.
     
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  13.  
    Cold$moke

    Cold$moke Well-Known Member

    Ill dig around and find the post

    Its not so much that the plant cannot take in excess DO

    Its that water can only hold so much at a given temp
    Like when you boil watet you see the oxegeb escaping in the bubbles that form before it boils :)
     
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  14.  
    Budley Doright

    Budley Doright Well-Known Member

    It’s enough for me to worry about lol. My roots fall off if I run anything over 70ish for an extended time :(. Perhaps more air (re pump) would keep it in check but I refuse to run one, I had nothing but issues with them :(.
     
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  15.  
    Cold$moke

    Cold$moke Well-Known Member

    But the difference in DO @67 and @75 isnt enough for me to worry about

    Most people have flow problems this causes the rot which gets blamed on many things.
    And many things can cause the rot


    I myself am doing a single plant with no light proofing and high water temps 76 ish
    With hydrogaurd its doing fine

    Next run im going to cut the hydrogaurd to see what the cut off is fir my setup and environment
    :)
     
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  16.  
    Cold$moke

    Cold$moke Well-Known Member

    I wouldnt think lack of air is the problem
    Look up kratkymethod of hydroponics:)
     
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  17.  
    Cold$moke

    Cold$moke Well-Known Member

    Ha ha thanks bud

    Im actually more into the metals for knives :)
    Yes im a knife junky :oops:

    Nothing looks like old japanese smelted steel unless you smelt it yourself lol

    But i just dabble with it atm
     
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  18.  
    Budley Doright

    Budley Doright Well-Known Member

    I do love hydroguard and I’ve said a few times that it saved a run but without it I’m fucked and I can’t get it anymore, looking for a replacement but they all suck so far :(. That was what forced me to mechanically chill (cheap for me, refrigeration mechanic lol) and I gotta say it does keep things stable and no beanies. I do agree it’s not needed but IMO it does allow for a better grow when I keep res at 66-67. Also there is a fine line between enough and not enough DO :(.
     
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  19.  
    Cold$moke

    Cold$moke Well-Known Member

    In your case since you dont have access to stuff like hydroguard i would chill or find a new type of system as well :)
     
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  20.  
    Cold$moke

    Cold$moke Well-Known Member

    Its not like i wouldnt rather my water stay at 68 i would but im not going to chill

    When i get my new system running mabey ill have this figured out for ya :)
     
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