Metamorphosis

My moss garden has not turned out quite as I hoped on Boxing Day. It has been difficult to get the watering right and it wouldn't be the stage for my mystery guest I had hoped.
A multitude of creepy crawlies have emerged; slugs, snails and other wriggly things. This morning there were two amorous crane flies in the tank, I wondered how they had got in. Later I realised that they had hatched from pupae in the moss when I saw this emerging.
I think I am going to abandon the moss and go for nice clean gravel.