I've posted about my DIY water change system here before but I would like to open the discussion again. My water change system is made up of Python hoses, PVC
pipe, parts from my old canister filter (hate canisters, but that's another topic), potable water hoses, garden attachments, and a big water pump:
Many Hats of Me: Aquarium Water Change System
Please post some of your systems here with lots of photos. Mine has been running for over a year now, and I would like to improve it if I can.