Has anyone installed a SeaLand vent filter? My marina in Ct told me that there is not any room by my holding tank to install one. I have a 2000 model. Also, if you have installed a vent filter, is it effective? Sailscall #754 Marty Mattler Countrywide Practice Brokerage mmattler at ddsbrokers.com Phone: 800.222.7848 Fax: 877.269.1291