yellow underside

  1. mastermeow

    Leaves turning yellow- hydro fox farm

    Need help determining what the issue is. I didn’t have an electric ph reader before. The ph is now 5.6 Before it ranged 6.0-6.5 I am using fox farm according to the feeding schduele. I’m using led lights. Hydro clay medium. 2.75 gallons water 8.25 of big bloom tsp and grow big Ph ~5.25 Fim...
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