I am well equipped filter wise. I have 5-6 sponge filters, 3 air pumps and two Aquatech filters. With the 20 gallon I was going to do at least 4 sponge filters and probably one Aquatech filter to keep good flowing going. I've recently read that have a sponge filter in your tank whether it's running or not is important in case of a power outage because you can at least run one of those off of a battery back up.
I keep hoping my husband will eventually get interested in the fish and somewhat knowledgeable like he has with other hobbies such as gardening I've picked up. He doesn't necessarily participate directly in them but still has taken an interest. I had surgery last year for now my participation in something that I found relaxing like gardening is very limited.
The fish for me at least give me some enjoyment that I used to get doing my other hobbies. I like giving them a good home, interacting with them and decorating the tanks. So far he doesn't get that. Honestly if he had decided to do the same thing I would not be bothered by it. It's not like I went to a shelter and brought home a Great Dane. I am really looking forward to trying to decorate each section with a theme.