if it is only a foot deep nothing will be able to live in that comfortable need to make it at least 24" deep, our standards are not to high there just right, i would say like a 6 by 6 by 3 to 8 by 8 by 3 would be awesome, your tank will work just add more depth or else your screwed, also do not stock it like crazy or you will go from lots of cool fish to lots of dead fish
i dont think predation is a big issue as the only predator whithin miles would be a hawk but maybe our cat might not do to well...? not sure what exactly i thought maybe i could do a fountain and an internal filter for 100 gallons but if i made it deeper it would be three hundred gallons and filtration would be crazy!
i already knew that but you could spend a lot more then you need to! does any one have any suggestions whioth out paying over 50 bucks? it would help A LOT also is there iny DIY filters?