A python hose system works really well, I used my own DIY python system all the time for my water changes.
This is a system using a long hose to go from kitchen sink or bathroom to the tank, and using a universal pump you can take the water from the tank to the sink or bathroom and if you can attach the hose from tap to the tank, the water pressure from taps will simply go through the hose to the tank.
Be mindful you'll need to keep an eye on the tank while you're doing this but once you get a system up and running and with a few tweaks here and there, you'll be thankful for this system, a real back and time saver tbh.
You could try something like this -
No more buckets water changes! AKA DIY Python system Hello everyone! The brief context of this tutorial is this:I have a 60L tank which is slightly on the overstocked side, though I plan on getting a much bigger tank in the coming months. For this reason, water changes have become a big thing...
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