Your betta fish called and said he wants a mansion. This set has everything except water and plants, so after a nice aquarium cycle your betta can move right in and stretch his fins. Or fill it with platys - that’s what was in here before. Or throw in one goldfish and watch it grow to epic proportions. Or make a terrarium. Or put it in your garage for the next 5 years. At any rate, it’s solid and it’s ready to go.