I find it rather difficult to obtain the Chelated Trace Element mix, however, have managed to pursuade a chemistry student to make up the formula for me, provided I purchase the necessary chemicals. Can someone post the necessary chemicals for making the Trace element mix eg. Ferrous Sulphate, Boric acid etc. and in the required amounts (eg. 1 tsp etc) Thanks very much, Rodney (rdorvill at sp_ac.sg)