oxygen concentrator

  1. S

    Dissolved oxygen levels and air diffuser rings

    hi I have a RDWC system that has air rings in each pot. I've recently changed air rings as I was changing out the pipes after root issues. I used soaker hose instead for a temp measure, bubbles look a lot bigger so I've managed to source the original hose from ali express (I refuse to spend £10...
  2. N

    New to DWC.

    Hey all, I have been growing in soil, indoors. Doing DWC for the first time; I think I have enough information from this forum and local stores and folks, (I live in Mendocino), to get started. BTW, great info here and kindly presented suggestions!! My question is: has anyone out there used...
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