My fish room is on the bottom floor of my town home and the tanks are on carpeted floors (spill mats extend about 1 foot around tank). Also on the bottom floor is the HVAC room and laundry room as well as access to the garage. I have only been here 3 weeks and have found lugging buckets either upstairs to the nearest bathroom or out to the street to be exhausting. Two options that I see are the HVAC condensate drain and the washing machine drain. Can I use the HVAC condensate line to dispose of saltwater and/or freshwater? The washing machine's drain is a little further and about 3' off the ground but that is another option. This is a brand new home so I would rather not destroy the carpets with every spill/splash but also don't want to cause any major issues.