My wife and i struggled with this.
Her expectations of time management with the tanks were not met and she was jealous which leads to hatred. The path cant apprently be reversed, but we have gone from hatred and jealousy to she just leaves it alone and is glad i enjoy it.
Communication is the key, find out why she dislikes it. My wife understands it makes me happy and never once serioisly wanted me to get rid of my tanks, just to manage my time with them better.
To be honest i was dabbling with them every night, its also help me step back and enjoy more. I still get to do the same things, i just concentrate them into bigger weekly efforts than small daiky efforts