Hello! I've had several freshwater 10 to 20-gallon aquariums, but it has been about 20 years since the last one. I don't have spousal agreement on making space for something like a 29-gallon on a stand, so I've decided to go with a betta fish in a standard 5-gallon on my nightstand. I already have several questions, and I'm looking forward to hearing about your aquariums.