Skelly iv'e never heard of formulex I don't use the chems iv' never needed them,in fact when I do clones iv'e been using the two plastic cups a dab of gel and a peat pellet method and iv'e had less losses with this way than any other, heck im not even using any of my lights just sitting the cup greenhouses in the window and everyone is rooting great.they r clones. iv jst been watering em morning then night with tap water. temp is 78f and humidity is 100%.i have 1 200w envirolight 1ft from bottom of propagator.av you heard of formulex,how n when is it used?