I have a newly set up 5 gallon aquarium currently housing a betta and 2 snails. I'm not sure yet, but I'm thinking about dividing the tank in half and housing 2 bettas. Is 2.5 gallons cruel? I feel kind of bad because he's had the 5 gallon to himself all along. I would put a snail on each side along with maybe 3-4 ghost shrimp.
Right now I have a small internal filter in the tank. If I decide to divide the tank, should I get another filter for the other side? How do you go about cleaning both sides? Vaccum one side, take out the vacuum, then restart it in the other side?
This is just a passing thought right now so any advice or suggestions is appreciated. What is your opinion on even splitting a 5 gallon for two bettas?