Hi. my name is stuart i used to keep salt water fish about 25-30 yrs ago . I would love to start a nano reef after the first of the year, going on a 10 day trip to china 11/28 , and will start when i come home . My question is wich is more feasible nano cube or 20 gal low. I would appreciate as much help and input as possible thank you stuart ,surprise az. n.w. phoenix area