Thanks guys, glad you like it.
Jack i think it was Wednesday evening, I did a quick water change in the morning as id had a slight nitrite spike and remember thinking it was odd they hadnt touched the courgette id put in when i got back from work. Was going to make a cave like that, but got it from a guy on ebay in the end as id not got round to it. Ive got some roof tiles in the garden if you want a couple to make some mate.