So there's been conversation about the usable capacity and draining capacity on fresh water tanks lately. I came across this on some of my prepurchase research before I bought the camper which made for good conversation with the sales rep. The capacity is important to me because we will be staying at state parks a lot. I found an industrial plastic shop in town that was able to hot air weld two fittings in at the lowest points of the tank. In the before you can see the outlet is on the side of the tank. This leaves what JoelVW found to be 15 gallons left in the tank, draining or pumping out. I forwarded my modification to the Heartland Customer Service Team.
Before
http://i561.photobucket.com/albums/ss60/tmackx/5a5c8d6522ffdf3942aa2eaf83dca0ce.jpg
After
http://i561.photobucket.com/albums/ss60/tmackx/dabbfc29524964822dd579008fc57f14.jpg
http://i561.photobucket.com/albums/ss60/tmackx/374f5daacee2df245284ccb4bda1db42.jpg
http://i561.photobucket.com/albums/ss60/tmackx/a8c658c630e61e45730b853d54dba62c.jpg
http://i561.photobucket.com/albums/ss60/tmackx/7ccd9c7d5c2f9ad4feeec4d8582b78b1.jpg
Before
http://i561.photobucket.com/albums/ss60/tmackx/5a5c8d6522ffdf3942aa2eaf83dca0ce.jpg
After
http://i561.photobucket.com/albums/ss60/tmackx/dabbfc29524964822dd579008fc57f14.jpg
http://i561.photobucket.com/albums/ss60/tmackx/374f5daacee2df245284ccb4bda1db42.jpg
http://i561.photobucket.com/albums/ss60/tmackx/a8c658c630e61e45730b853d54dba62c.jpg
http://i561.photobucket.com/albums/ss60/tmackx/7ccd9c7d5c2f9ad4feeec4d8582b78b1.jpg