Mardi's tank: he gets his tank changed every week but last week I changed it alot and he seems to love it so I'm not gonna change it this week. I added tons of different types of plants (fake) and some new caves.
Mason's tank: he absoultely hates being out of his tank and attacks any hands that come in to change his decor so he doesn't get changed very often. He doesn't get actual items changed but I do rearrange stuff so it seems new.
Maddux: since his tank is only 3gs I change it every week because theres not much space to explore! He swims right into the cup when it's time for water changes so it's easy to change his. I have a load of stuff that I switch out in his tank! He has a terra cotta that I sometimes give him. His rocks that I collected get rearranged, He gets new plants too!
Mercedes' tank: Her tank is planted so she doesn't get it changed to often but her plants are constantly growing so everything changes daily! She has a tower of terra cotta pots that she loves!
How much and often do you change your tanks?