i always wanted a pond. and i had an idea, and wanted to know if u think it would work? if i dug a hole in the ground, got a 70 or larger gallon tubberware container (its long not tall), put it in the hhole, with some sort of substrate, and got a filter on it , and put in a few goldfish. would that work
also, would i even need a filter.
also, would i even need a filter.