rockwool question

Discussion in 'First Time Marijuana Growers' started by shawnyboy420, Sep 21, 2009.

  1. how do i get rid of a green algae on the rockwool? i have about a 6 week old plant that has had its ups and down but now i seem to be bak to growing pretty well but i was unaware that i had to keep the rockwool away from the light so now i covered it with the hydroton pellets and waqnt to get rid of the damn algae any suggestions? im a first time grower so any advice at all will help thanks grasscity!
  2. You can buy cube caps which are plastic covers that fit over top or rw cubes other wise get some b&w poly cut it into a square or rectangle, put a slit into it and wrap it around the stem and the rw cube/slab.

    Sprinkling GH Rare earth or any pyrophylitic clay on the algae also works.

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