Hello, It would probably be easier with a pic. This bucket holds 6 gallons and the lid is air tight.
The pump is on a timer, it turns on for a couple hours a day, then on saturday(when i do the water change) it starts really early in the morning, so its mixing up until i turn the pump off.
When changing water, i simply take the return hose (the hose that is coming from my sump/fuge) out of the main tank (while the power to that pump is off of course) and stick it into a bucket the same size as my mixing bucket (pictured above). after that i turn my attention to the mixing bucket, unplug the water pump, turn the red handle to the off position, and then with a pair of needle nose vise grips (teeth protected with small vinyl tubing) i clamp that little hose right in the middle. I then get my 10 ft. long tube, connect it to the ball valve on my mixing container and attach the other end to the sumps return pipe (remember its hanging in my waste water tub) i then release the ball valve and all the new water flows into the sump. This takes me 10 min and i don't get a drop of water on anything! I am usually half asleep when doing it.