Lava rocks in hydro machines

Discussion in 'Advanced Growing Techniques' started by hydro12, Sep 10, 2009.

  1. #1 hydro12, Sep 10, 2009
    I'm wondering If you could put a few lava rocks in the water if you use a Hydro machine. Good idea? advantages/disadvantages? opinions anyone?
     
  2. #2 SlackerBee, Sep 10, 2009
    Lava rock works well as a medium in hydro.(esp. for those who are allergic to grow stores)
    Beyond that, there is no reason to use it that I'm aware of.
    BTW: If you do use lava rock as a hydro-medium, rinse the SHIT out of it first. Trust me.


    Sinc,
    SlackerBee
     
  3. #3 Hibonus, Sep 10, 2009

    Better yet, Boil them for half an hour.
     
  4. #4 hydro12, Sep 10, 2009
    that wont boil out all the properties that the plants and their roots need for nutrients?
     
  5. #5 SlackerBee, Sep 10, 2009
    Lava rock is not used as a significant source of any nutrients that I'm aware of. I used it as a medium because of it's low weight, high surface area and general availability.

    HTH,
    Sinc.
    SlackerBee
     
  6. #6 Hibonus, Sep 10, 2009
    nutrients come from your water. Boiling just assures they're sterile, free of dust, dander, mold, insects.
     

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