I purchased 5 square metres of mushroom compost. It has a ph level of around 7.5/8 taken with a simple ph test kit. Can I get any suggestions as to what to mix with it to get a lower ph. Pine needles and peat are the two I can come up with. Also I am in Hexham near Mortlake/Warrnambool Victoria and have mulched a lot of my beds with hay and am having terrible slug problems. I am getting some ducks but they will not be able to access all of my veg garden because of no fencing. I am thinking of mulching my brassicas with compost only. Please don't s tell me you can't mulch with compost only because there is a very successful Englishman Charles Dowding who only uses compost as mulch. https://www.charlesdowding.co.uk/no-dig-growing/no-dig-growing-preparation/. The slug problem is really only on my brassicas so I am thinking to just clear the mulch around the brassicas and use only compost with some wood ashes sprinkled over and leave the rest of the garden as is.