Oh most definitely i had a 10g nano reef for a couple months first. its was an established reef tank for 2 years. its was very nice. but when i got more time i went bigger, and now bigger, and when really started getting into it their was so much stuff i want that i dont have room for in a smaller tank, like my fav fish is a Fairy Wrasse. no chance to keep it in a smaller tank. i think i would have been alittle more happy if i would have gotten a 45 or 55 long it would have let me spread everything out but the hex stretch their isnt much room everything seems to have to sit on each other. but yes smaller tanks are nice too. some of the nano tanks you see are amazing..