Just a suggestion;
I had in my tank years ago, an old clay/brick pipe
Buried it half way in the tank and they loved it - and it looked great
Sort of like these
Hello fellow fish keepers
I went abroad to Egypt many years ago and I brought home a nice piece of coral which was laying on the beach (I have since read that I probably shouldn’t have taken it home – whoops)
Would it be ok to put in a tropical tank? Not sure if it would contain any harmful...