I am also one that doesnt ming "fussing" with the tank. I dont see it as work. If i did then i wouldnt own a tank at all. its all personal preferance i think. but doing it daily has no negative effects. think of where most of the fish we keep come from...mostley rivers,steams,dranages,ect.. the water in these areas are constanly flowing and doing 100% water changes every second(something like that) plus dont we try to simulate their natural enviroment as much as possible? we can do it somewhat in diet, but to simulate a river or lake or stream, wouldnt water changes daily be close?? thats my stand point on it, and probely only shared by few. hopefully any new hobbiests reading this thread grasps the importants of water changes. as for doing it weekly or daily, I think daily would out-weigh weekly, but not too many people like to do it, and put it off until their tests indicate a change is needed...