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  1. Courtstiff

    Optimum cf level

    What is the ideal cf level for hydroponics in my 35 litretank i was at 18-20 but have scorched my leaves
  2. Courtstiff

    First time hydro grower.

    just wondered what the optimum cf level is for my 35 litre flood and drain,i was at about cf 18 - 20 and have scorched my leaves
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