to the guy who feels like hes under siege by MFK, don't. once you become acustomed to REAL fish keeping like a good amount of people here have, you will know this is really good advice, but just realize that there is no such fish you are looking for unless you get sea urchins or starfish.. shrimp do fairly well too.
NOW TO BE HELPFUL: for now, to make it easier on you, why don't you just get a large cup (like the 7 eleven ones), and ONLY take out that much water from the tank every day. it takes 2 seconds to do. just open the lid, take out one cup, fill in replacement water, and be off. do it every day. not that hard.
people on this site might not agree with me, but you are at LEAST changing a small and manageable amount of water every day rather than feel like you are doing an overhaul each week (which is how your describing the difficulty" of water changes).
water being changed constantly, though in a small simple cup of water is still MUCH better than no water changes at all. you hearing me?
and also, why not just add some monster filtration to your tank? like if its a 125, put like 10x filtration on that sucker, much more expensive but at least you can afford to be a bit lazier right?