We have a terrible soil which is fill. For this reason I do sheet mulching with whatever I find. That means that my soil is probably way out of balance. I think testing would be a great idea. BUt as said I sheet mulch with whatever I find so every spot is different. I would like to know about the main nutritients in the soil but as well salt, minerals or if there is something nasty. Are there any testing kits (not those you can make 25 tests I think of testing continuously) which I can use on a constant basis? Using a lab is quite expensive if you want to get a good overview of different spots. Are there some unusual ways of testing your soils? We are in the Blue Mountains. Both Steve Solomon and Phil Nauta tell that testing is crucial.