Hard to believe, but despite the rain here this month, there has still been a few days were my accent/mame gravel trays have dried out too fast. On the advice of a friend I decided to swap the grit, which was quite large, with small grain clay [tesco cat litter].
I wasn’t able to do this on my own due to the shoulder so I recruited my son Matthew to help out. He has an interest when I can eventually pull him away from the computer.
Job done, thanks Matthew.