I'm fairly new to the fishkeeping hobby but I can say that I'm already addicted. I started back in December when I got a 1 gallon tank as a gift and didn't know what to do with it so I got a 5 gallon to do a few fish and realized that wasn't big enough. so I returned it and paid a few bucks more to get a 29 gallon. Since then I've also purchased a used 75 and 55 locally and just got a 40 breeder that I have some interesting ideas for.
I really like to over complicate things and try to DIY a lot of things that I probably shouldn't but that's half the fun (seriously my fill/ drain system is an over complicated mess, but that's for another post).
Picture of my 75 (a little dirty this was right after a vacation)
Picture of my 75 while changing water today