Originally Posted by Shadyr
It does sound like each has the other's decor
I'd say the only time to be really paranoid about it is if one of the tanks is having environment problems or one of the fish is sick. Otherwise, just wash everything well before putting it back - make sure to rinse super well and dry in the sun if you end up using any bleach or vinegar.
I have a box of decor that I switch out, so some of my things have been in several tanks already.
Thank you so much! Yeah, their decor is kind of opposite
The betta in your profile picture is GORGEOUS by the way.. I've always been a sucker for white bettas, considering I have Heather, Tinsel and Winter! Hahaha