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WATER LEVELS in DWC

Discussion in 'DWC/ Bubbleponics' started by watsupbud, Jul 21, 2011.

  1.  
    Niblixdark

    Niblixdark Well-Known Member

    If the nutrient solution is too close to the bottom of basket you can build up salts in the hydroton clay balls and cause toxicity over time.
     
  2.  
    FennarioMike

    FennarioMike Member

    Then why would Under Current have their systems run this high if it's problematic? Would all of their systems eventually fail from toxicity if this was true?

    And are you saying that the Hydroton shouldn't get wet at all from nutrient solution? Because, even if it's 2" from the bottom, wouldn't the popping bubbles wet the Hydroton, thereby also causing these salt build ups?
     
  3.  
    Niblixdark

    Niblixdark Well-Known Member

    Yes it does over time thats why you flush every once and awhile. If it's too close (touching or submerged) You will get too much salt build up too quickly and then the medium gets over saturated with salts, root burn, plant burn & curled leafs, stunted growth, rust spotting. Over watered symptoms do happen in hydroponics if the water is too high. This is not a myth, it's fact.

    Am talking about standard DWC systems.
     
    Last edited: Mar 5, 2017
  4.  
    FennarioMike

    FennarioMike Member

    2 weeks into flower. Water level - 2" above netpot. Crazy good root growth all the way to the netpot with most of the thicker cord roots way up high on it. This means ZERO wasted space where no nutrient exchange would take place - just transport.

    It doesn't make sense to keep an air gap. The solution is your medium right? I mean, you wouldn't do this with anything else - it would be absurd. Would you strip away the first inch or 2 of soil underneath the root crown and just force them to dig deeper? No, you wouldn't. Just like in soil, you want the roots to spread out from the very top as it goes down so that it can MAXIMIZE it's available to and fill it with roots.

    Sure, it works just fine keeping the levels lower - but is it better and does it make sense? I haven't heard an argument yet that contradicts ^

    Also - ZERO salt buildup. No, these systems don't always fail with toxic levels of salt - unless you're mixing stuff way too strong. No RO flushes either (except the final flush). In fact, no complete nutrient change for 2 - 3 weeks. I bump the levels each week, keep a large top off rez with the following week's mix in it, and by the end of the week it has filled itself with the new mix. Repeat. If you actually get to know the science and chemistry and a bit of physics of it all, you can really learn to run these systems with precisely what the plant is calling for. A superb design.

    IMG_1353.jpg IMG_1243.JPG
     
    HotBunz likes this.
  5.  
    HotBunz

    HotBunz Active Member

    To say this is FACT is a little over stated I believe. I run my DWC, standard stand alone 3.5 and 5 gallon buckets all the way to the top of the bucket. My plants will suck down 1 to 2 gallons of solution a day. If I only kept a little over 3 gallons of solution in a 5 gallon bucket to stay below the net pot my girl's roots would be nearly out of the water in only 12hrs. Also more solution makes for a more stable bucket. I have ZERO salt build up in the hydroton. On some of my grows I only do a few complete bucket changes for the entire grow. I have never had a need to do a "flush every once and a while". If you have to do a fresh water flush mid grow you are doing something wrong.

    I believe there are a lot of other "FACTS" regarding DWC that really are untrue and it's a matter of people just not having a handle on their system and understanding how it works. One of these "FACTS" is needing to run your buckets down into the mid 60's temp wise. I see guys freaking out adding chillers and frozen water bottles to their buckets. I use no chillers. I give ZERO fucks about bucket temps and run some massive plants with bucket temps sometimes into the 80's. My current bucket is at 78 degrees, I just took it's temp and the plant in it is 32" tall and over 30" wide.

    GC3_day37roots.jpg GC3_day37_2.jpg
     
  6.  
    FennarioMike

    FennarioMike Member

    Exactly. Thank you...
     
    HotBunz likes this.

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