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  1. DrTentgrow

    Rockwool - Help Please

    Hello I am starting some seeds in 1" rock-wool which I will be transplanting into aqua farms I have made a solution of spring water which has a E.C of 0.4 and put a splash of canna start nutrients to bring it up to a E.C of 0.9, i am used to using root riot cubes in soil which i never have any...