Don't take my word for it, but if i remember correctly i paid like $60 for a 50' python, and then $10 for a syphon with a big tube and put that on my python.
They are a syphon hooked to a rubber hose that attachs to your sink so you can drain straight in to your sink then push up the attachment and fill the tank up.
Living in FL I have a lot of chlorine/chloramine in my tap water, so what I do is fill 6 of those 5gallon water jugs with tap water and Tetra Dechlorinator or Prime... then to make sure all the chlorine evaporates and the water gets close to proper temp, I let the jugs sit over night. I then siphon 30g of water out with the gravel vac (not to vac, but to pick up Oscar poo). Next I pour the 30g of prepped water into the tank. After that I sit down and have a Beer. Then I move on to the next tank.
They are a syphon hooked to a rubber hose that attachs to your sink so you can drain straight in to your sink then push up the attachment and fill the tank up.
My wife used one of those tank-to-sink\sink-to-tank jobbies last summer whilst I was away for 7 months, It doesn't work for me, besides I like doing it the bucket way....
I set up 5 5g buckets in a row in front of the tank(75g).
I then siphon into the buckets while vacuuming most of the gravel.
Then I use 3 food safe buckets for refilling, while adding the proper dechlor
into each bucket before letting the water fill the bucket. I have one filling while I'm dumping the full one.
Right now the coldest my tap water gets is 80*F, which is perfect to the tank
temp.... I also use a pH buffer every W\C...
I use a Aqueon hose, it is cheaper than a python and does a good job. I start the siphon with the sink and once it starts I shut off the water off and let gravity/siphon do the work. Once about 20% is drained I turn on the sink again to to get more suction and siphon any poo off the sand. After that is finished stop the siphon and add a cap or two of prime to the tank and let it circulate for a few minutes, then I adjust the temp from the fauset and begin filling with the Aqueon. I have heave chloramines and never have any troubles doing this way for several years changing large volumes of water at time. Sure is a lot easier than buckets and 'aging" water