Hi all, im new to the site and this is my first post. I live in UK and began keeping fish only 6 months ago. I too got tired or running in and out with a little bucket chaging the water in my 190 litre tank, so now this isi what i do...
i bought a 50 litre bucket ( big and very heavy!!) use a gravel cleaner and empty required amount into bucket, (i bought 50 litre bucket so it would be large enough for all water change % requirements.
Then from an external tap i fill up to the required amount and add water conditioner. A spare heater is placed in the bucket (covered in its protective cage and away from the plastic.
I then use a pond pump which is submersible and drop it into the tank. Of course a hosepipe runs the water back to the tank. Tthe pump will pump 2000 litres an hours. However as it is required to lift approx 1.5 meters, it loses some of its efficiency (which is better as thye return flow is calm and does not disturb the water. i place the hose underwater in any event.
My tank is a corner unit and near to a large window, i placed it there for this reason alone, that way i can use such a large bucket as i dont have to move it anywhere and the pump doesnt struggle as the hose only needs to be 3 meters long.
Hope that helps.
By the way,whats a python?, do they have a web site???.
Regards