You must have BATHTUB and GREEN BLOCK to make PLUMBING. You can find this item in furniture category. Growing PLUMBING takes 0d01h46m12s. There is no data about durability. Oops, there is no entry in the database about seedratio. If you know something, please share. Oops, there is no entry in the database about gemratio. If you know something, please share. Oops, there is no entry in the database about blockratio. If you know something, please share.