Hi, itchybro. Thanks very much for all the info you have given me, as per usual you have given me much to ponder. At the moment for ease of use and availability i will use the dish soap for now. It will take me a little while to get some of those products together. And yes, i would much rather use something that will benefit the plants. What i do need to know is, once i have sprayed the plants, how long do i leave them before putting them back under the lights ? Possum.