Hello all this is my first post,right now i have a pacu in a20 gallon tank, he will grow to a max size of 3 feet and 50 pounds or more, i dont want to have to buy a bigger tank every six months so im thinking about building a 200-300 gallon plywood/epoxy/glass tank. Does anyone have any experience on such a tank-the good or the bad? I am very mechanically inclined so building it wont be a problem. Ive never kept a big tank before though and would apreciate any info on what type of filter system to use and any other important info. Also what would the material cost be?thanks