I plan on building a skimmer for my 110g reef and if it works one for my 44g tank as well. I really like the plans on this site http://www.hawkfish.org/snailman/diy4inskimmer.htm but it recommends that the skimmer be 4-6 feet tall. It also says the minimum height is 28" inches, will the performance really be lost if it's not quit 4 feet? Anybody used this plan to build one?