i have yet to ask my husband about it, lol hes not fish mad, and he thinks 3 tanks is too much, but im going to ask him later about what he thinks. no doubt itl be one of those 'if it can be done cheaply and wont look a mess, and if you must do it' responses. we shall see. im thinking maybe 5 goldfish in there, with lots of plants. i dont know, im still doubtful itl ever happen, but if it does il be posting pics of the building of it and finished pond.