Hey folks, hope everyone is enjoying the Summer...here in the DC/Potomac area we just had our own personal little Katrina last week! I have had my 1993 Hunter 23.5 for three seasons now...this time when I put Bon Temps in the water and filled the water ballast tank, I ended up with about a 5 degree (just noticeable) list to starboard as the boat sits in the water. I researched and found out that failing to fill the ballast tank is easy to do, so yesterday I opened the valve and plug again (for several hours) - no change. Any idea what might be happening? I have the battery under starboard settee, but that's same as in previous years. Am using the PortaPotti now, but it's a gallon or less, and bsically centerline. No water under anywhere where I can see...nothing of any significant weight on that side of the boat that would cause such a list.I have fantasies that the scum and hydrilla that infests the Potomac is in my tank and some "sludge monster" is growing in there and displacing water. I think I will put a gallon or so of bleach in the tank, sail a day to agitate it, then get my trailer, pull the boat, empty ballast, and refloat and refill. I don't know if that will make any difference...doesn't seem like it should, but I simply have no other ideas. Anyone out there have suggestions...or similar experience? Thanks!!!