I have quite a big room and currently have 5 fish tanks! I have a 55 gallon cichlid that i have had for about 4 months now. They are about 3 inches and there is 13. I then have two 29 gallon tanks. One is goldfish. I am trying to get them out into my 150g pond but have to wait tell after winter. 3 of the goldfish are 8 years and the other two are 1 year old. My other 29gallon tank currently has 4 zebra danios and a oplaine gourami. I have had that tank set up for a long time and the little guys are slowly dieing off. I then have a 10gallon with two baby cichlids in it not even an inch yet. Last but not least i have a about 2 gallon with a betta. The bettas actual tank is the 10 gallon by himself but i was expecting baby cichlids so i had to move him. I have been thinking about maybe getting a 120 gallon. My dads not to happy about it. I have been trying to convince him before i got my 55 gallon about a year ago. I really want just the 120g, no other tanks. And it would be a cichlid tank i think. Do bigger tanks break easy? I don't know if my floor would hold it. Also, would the 120g with a canister filter and all the works be cheaper for hydro then all my tanks now? (All have hob filters) i don't know what to do :/ i need to cut down on water changes as i hate doing them and they take 4-5 hours.