Currently I lug 5gal buckets from the sink to the aquarium, climb up on a chair and slowly dump them in the tank. I treat each 5gal bucket before adding it to the tank. I am wondering if I can just run a tube from the sink to the tank, fill it, and add the dechlorinator after its filled? This would save me a lot of time, effort, and back aches. Also, I try to get the temperature of the new water close to that of the tank (about 80 degrees), is this ok? How do you do your water changes?