I'm pretty new to bonsai, I started last summer. When I saw that many of my trees were getting leaf burn last summer, I went to a local garden nursery to ask about this. The guy at the nursery thought this was probably salt buildup in the soil due to the calcium levels in our tap water. He suggested a soil acidifier w/ iron. I used it a few times last summer without noticing any ill-effects (not a lot of positive ones, but hey, the damage as already done). Here is a link to the water analysis for my area http://www.abcwua.org/files/waterquality/datatables-2008/zone12.htlm. The product was ferti loam soil acidifier with iron. Would an acid lover fert work just as well or better? The leaf burn was mostly on the japanese maples and the linden trees that I had last summer. This could be due to high heat and winds. Will soil acidification help mitigate high heat/winds? Thanks for your help.