Thank's Terry @30 years they must be fun
Can confirm all gravel been removed just keeping bare bottom, Regarding repto-min he's just not interested in them also tried 2 other types including Pac-man balls & a sinking ball for African claw frogs, The design of the tank might be an issue its 120L/26G but its Square and he will not spend a lot of time near the surface, I have ordered a floating island which can be height regulated so he can spend some time near the surface if required,
I am toying with the idea of getting him a female friend but heard some bad stories where the males torment the females/ can males stay together!
I think am going to have to stick with the night crawlers but I plan on feeding them repto-min

and other good stuff, the worms are sourced via a breeding farm and very safe,
I just need to learn how to de-poop them!