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lower leaves browning

  1. Low Tech Forum
    Hi, I am seeing good green cabomba growth in my tank, almost 1.5 inch per week. However, the lower leaves of the plant turn brownish though the upper parts are lush green. Specs: 42g Height: 18 inches Light: 1WPG 6500k CFL + indirect sunlight from window Substrate: river sand Ferts: liquid...
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