well i was watching a video on youtube floggin sent me and this guy has a awesome setup and he had a interesting piece of equipment i have never seen or heard of, its called a dialyseas its basically a automated system that has combined medical and electronic equipment together to create a device that does a constant waterchange on your tank. it basicalle pulls the waste out of the water with a artificial kidney membrane and adds ro water and salt back into your tank. 

sure everyone doesnt  need a dialyseas on their tank nor can they afford one but its certianly interesting and i would love to have one!

below is the video i watched about it and a video of the guys tank along with a link to the dialyseas website 

http://www.youtube.com/watch?v=jq-XumCtH4Y&feature=plcp&context=C41c8bb7VDvjVQa1PpcFNs3l-SLWLNuj69zR4wCYwFi3LSddzQu20%3D

http://www.youtube.com/watch?v=hlX62P694_E

http://seavisions.com/prod02.htm