I fill my aquarium with deep well water, no chlorine. Since the python sits at 20% below my tank's water level, I just hook it up to the outside hose, run a bit of water and then disconnect the hose to begin siphoning. After removing 20% I just reconnect the hose and refill. So easy for me! Of course not having to deal with chlorinated water is a help.

SUPER WELL MADE, SUPER CONVENIENT, and what a super value considering the time and mess I have saved myself with this product!

What a difference. If you do water changes, which is paramount to success in our hobby. I use to have to run from the faucet to tank and electrical socket to tank. I have had a few "water everywhere" experiences.🤯 This simple and effective tool, has changed all that. I now do no spill water changes. It's peace of mind to have this tool.