Can somebody send my to the right direction? Ive looked in both DIY Tank & DIY Filter and cannot seem to find it. Im looking to build my own tank and own w/d filter. Im just wondering the size of bulkhead needed and how many I should put. Im also looking for what amount of GPH my pump has to be. My tank is gonna be 5' x 2' x 2' aprox 145 gallons.