Many thanks Sue, I read a similar article in Italian. Now, I don't mind for biological or not, the choice of iron phsospate was made only thinking that iron could be beneficial to plants.
I didn't find anything about molding, in italian, I only found the sale for another slug poison (the one I used before) that said "it doesn't mold". Enough for me!
I scratched the upper part of the soil with all those white mold granules and throw everything in the garbage bin. Never again!
