Little three hole rectangular cave from freshwater

justlooking

Member
Have one of those non-painted fresh water (looks like a gray brick) tunnels and thought my saltwater fish will like swimming in it. I think if I throw some substrate etc on top it will look natural. Heard its fine to put in tank, just wanted to make sure.
Mostly for my yasha goby who digs under and I havent seen in like 5 days. I think he gets stuck and this might help (assuming he is coming back up)
 
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