slickrick18766

i am thinking about building a sump for my 150 gal tank i will be converting from fresh water to salt water, fish with coral i am just wondering where i could find plans on how to build one out of a old spare 30 gal tank i have. i do not know anything on how to do this i mean i have been looking around the net but i cant seam to find any plans on how to build it i need to know what size pump, how to build a overflow or should i just buy a overflow please HELP thanks