DiY is good for those that are handy, not the person that has no tools, never has worked with basic power tools/wood. I have built several cabinets, tables, chests, etc. Building a DiY tank would not be hard, nor that costly as long as you have all the tools. Fabio's dad and I are thinking of building one for him as we have all the tools necessary, patience, and time. For a 300 gallon tank made of acrylic it would run around $4000, but a 300 gallon DiY tank will run you about 500, less if you have a contractor's license.